/* =====================================================
   NFC Pay Bridge - Premium Mobile-First Styles
   ===================================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-glow: rgba(99, 102, 241, 0.4);

    --secondary: #06b6d4;
    --secondary-dark: #0891b2;

    --success: #10b981;
    --success-dark: #059669;
    --success-glow: rgba(16, 185, 129, 0.4);

    --warning: #f59e0b;
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.4);

    /* Background colors */
    --bg-dark: #0f0f1a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #252540;
    --bg-elevated: #16162a;

    /* Text colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-card: linear-gradient(135deg, #1e1e3f 0%, #2d2d5a 50%, #1e1e3f 100%);
    --gradient-gold: linear-gradient(135deg, #FFD700 0%, #FFA500 50%, #FFD700 100%);

    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px var(--primary-glow);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    min-height: 100dvh;
    padding: var(--spacing-md);
}

/* =====================================================
   Splash Screen
   ===================================================== */
.splash-screen {
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.splash-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.splash-content {
    text-align: center;
}

.splash-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-lg);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.splash-logo .card-icon {
    width: 48px;
    height: 48px;
    color: var(--primary);
    position: relative;
    z-index: 2;
}

.nfc-waves {
    position: absolute;
    inset: 0;
}

.nfc-waves span {
    position: absolute;
    border: 2px solid var(--primary);
    border-radius: 50%;
    animation: nfcWave 2s ease-out infinite;
}

.nfc-waves span:nth-child(1) {
    inset: 30%;
    animation-delay: 0s;
}

.nfc-waves span:nth-child(2) {
    inset: 15%;
    animation-delay: 0.4s;
}

.nfc-waves span:nth-child(3) {
    inset: 0;
    animation-delay: 0.8s;
}

@keyframes nfcWave {
    0% {
        opacity: 1;
        transform: scale(0.8);
    }

    100% {
        opacity: 0;
        transform: scale(1.2);
    }
}

.splash-content h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.splash-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.splash-loader {
    width: 200px;
    height: 4px;
    background: var(--glass-bg);
    border-radius: var(--radius-full);
    margin: var(--spacing-xl) auto 0;
    overflow: hidden;
}

.loader-bar {
    width: 30%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    animation: loaderMove 1.5s ease-in-out infinite;
}

@keyframes loaderMove {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(400%);
    }
}

/* =====================================================
   Modal
   ===================================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--glass-border);
    animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.warning-modal {
    text-align: center;
}

.warning-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background: rgba(245, 158, 11, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.warning-icon svg {
    width: 32px;
    height: 32px;
    color: var(--warning);
}

.warning-modal h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.warning-modal p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.warning-modal ul {
    text-align: left;
    background: var(--glass-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    list-style: none;
}

.warning-modal ul li {
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.warning-modal ul li::before {
    content: '•';
    position: absolute;
    left: var(--spacing-sm);
    color: var(--warning);
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn svg {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
    box-shadow: 0 4px 15px var(--success-glow);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--success-glow);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--glass-bg);
    border-color: var(--primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
}

.btn-block {
    width: 100%;
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.125rem;
    border-radius: var(--radius-lg);
}

.btn-large .btn-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: btnShine 3s ease-in-out infinite;
}

@keyframes btnShine {

    0%,
    100% {
        left: -100%;
    }

    50% {
        left: 100%;
    }
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* =====================================================
   Auth Views
   ===================================================== */
#auth-container {
    display: flex;
    flex-direction: column;
    padding-top: var(--spacing-2xl);
}

.auth-view {
    animation: fadeSlideUp 0.4s ease;
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.auth-header .back-btn {
    position: absolute;
    left: 0;
    top: 0;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.auth-header .back-btn:hover {
    background: var(--bg-card-hover);
}

.auth-header .back-btn svg {
    width: 20px;
    height: 20px;
}

.logo-small {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-small svg {
    width: 30px;
    height: 30px;
    color: var(--primary);
}

.nfc-waves-small span {
    position: absolute;
    border: 2px solid var(--primary);
    border-radius: 50%;
    animation: nfcWave 2s ease-out infinite;
}

.nfc-waves-small span:nth-child(1) {
    inset: 20%;
    animation-delay: 0s;
}

.nfc-waves-small span:nth-child(2) {
    inset: 0;
    animation-delay: 0.5s;
}

.pos-badge {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-success);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pos-badge svg {
    width: 30px;
    height: 30px;
    color: white;
}

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Form Styles */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-base);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--glass-border);
}

.login-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.login-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    text-align: left;
}

.option-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.option-icon svg {
    width: 24px;
    height: 24px;
}

.option-icon.pos-icon {
    background: var(--gradient-success);
    color: white;
}

.option-text {
    display: flex;
    flex-direction: column;
}

.option-text strong {
    font-size: 1rem;
}

.option-text span {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.auth-switch {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.auth-switch a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* =====================================================
   Dashboard
   ===================================================== */
.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

.user-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.user-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.user-status.online .status-dot {
    background: var(--success);
    box-shadow: 0 0 8px var(--success-glow);
}

.header-btn {
    width: 44px;
    height: 44px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.header-btn:hover {
    color: var(--danger);
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.header-btn svg {
    width: 22px;
    height: 22px;
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--bg-card);
    padding: var(--spacing-xs);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.tab-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-sm);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-base);
}

.tab-btn svg {
    width: 22px;
    height: 22px;
}

.tab-btn.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.tab-btn:not(.active):hover {
    color: var(--text-secondary);
    background: var(--glass-bg);
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeSlideUp 0.3s ease;
}

.tab-content.active {
    display: block;
}

/* =====================================================
   Card Reader Tab
   ===================================================== */
.card-container {
    position: relative;
    height: 260px;
    margin-bottom: var(--spacing-lg);
    perspective: 1000px;
}

/* 3D Credit Card */
.credit-card {
    width: 100%;
    max-width: 340px;
    height: 200px;
    margin: 0 auto;
    position: relative;
    transition: transform 0.6s ease;
    transform-style: preserve-3d;
}

.credit-card.scanning {
    animation: cardFloat 2s ease-in-out infinite;
}

@keyframes cardFloat {

    0%,
    100% {
        transform: translateY(0) rotateY(0) rotateX(5deg);
    }

    50% {
        transform: translateY(-10px) rotateY(5deg) rotateX(10deg);
    }
}

.card-inner {
    width: 100%;
    height: 100%;
    position: relative;
}

.card-front {
    width: 100%;
    height: 100%;
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.card-shine {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
            transparent 20%,
            rgba(255, 255, 255, 0.1) 40%,
            rgba(255, 255, 255, 0.2) 50%,
            rgba(255, 255, 255, 0.1) 60%,
            transparent 80%);
    animation: cardShine 3s ease-in-out infinite;
}

@keyframes cardShine {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.card-logo {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
}

.card-logo svg {
    width: 60px;
    height: 40px;
}

.card-chip {
    margin-bottom: var(--spacing-lg);
}

.card-chip svg {
    width: 50px;
    height: 40px;
}

.card-nfc {
    position: absolute;
    top: var(--spacing-lg);
    right: 90px;
    width: 30px;
    height: 30px;
    color: rgba(255, 255, 255, 0.5);
    transform: rotate(90deg);
}

.card-nfc svg {
    width: 100%;
    height: 100%;
}

.card-number {
    font-size: 1.375rem;
    font-weight: 600;
    letter-spacing: 3px;
    margin-bottom: var(--spacing-lg);
    font-family: 'Courier New', monospace;
}

.card-details {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.card-holder,
.card-expiry {
    display: flex;
    flex-direction: column;
}

.card-holder span,
.card-expiry span {
    font-size: 0.625rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-holder strong,
.card-expiry strong {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* NFC Scanner Animation */
.nfc-scanner {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 100px;
    display: none;
    align-items: center;
    justify-content: center;
}

.nfc-scanner.active {
    display: flex;
}

.scanner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary);
    border-radius: 50%;
    animation: scannerPulse 1.5s ease-out infinite;
}

.scanner-ring.delay-1 {
    animation-delay: 0.5s;
}

.scanner-ring.delay-2 {
    animation-delay: 1s;
}

@keyframes scannerPulse {
    0% {
        opacity: 1;
        transform: scale(0.5);
    }

    100% {
        opacity: 0;
        transform: scale(1.5);
    }
}

.phone-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
    animation: phoneBounce 1s ease-in-out infinite;
}

@keyframes phoneBounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

.phone-icon svg {
    width: 100%;
    height: 100%;
}

/* Reader Status */
.reader-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.status-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.status-icon svg {
    width: 24px;
    height: 24px;
}

.status-icon.idle {
    background: var(--glass-bg);
    color: var(--text-muted);
}

.status-icon.scanning {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary);
    animation: statusPulse 1s ease-in-out infinite;
}

.status-icon.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.status-icon.error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

@keyframes statusPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.status-text h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.status-text p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* Active Sessions */
.active-sessions {
    margin-top: var(--spacing-xl);
}

.active-sessions h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.active-sessions h4 svg {
    width: 18px;
    height: 18px;
}

.sessions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.session-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--success);
}

.session-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.session-info .session-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-success);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.session-info .session-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.session-details h5 {
    font-size: 0.9375rem;
    font-weight: 600;
}

.session-details span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.session-actions .disconnect-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(239, 68, 68, 0.1);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--danger);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.session-actions .disconnect-btn:hover {
    background: var(--danger);
    color: white;
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

/* =====================================================
   Manage POS Tab
   ===================================================== */
.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.create-pos-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--glass-border);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.card-header svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.pos-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Credentials Modal */
.credentials-modal {
    text-align: center;
}

.modal-header {
    margin-bottom: var(--spacing-lg);
}

.success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: successBounce 0.5s ease;
}

@keyframes successBounce {
    0% {
        transform: scale(0);
    }

    50% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1);
    }
}

.success-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.credentials-box {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.credential-item {
    padding: var(--spacing-sm) 0;
}

.credential-item:not(:last-child) {
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: var(--spacing-sm);
}

.credential-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
}

.credential-value {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.credential-value code {
    font-size: 1.125rem;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    color: var(--primary-light);
}

.copy-btn {
    width: 32px;
    height: 32px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.copy-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.copy-btn svg {
    width: 16px;
    height: 16px;
}

.credential-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* POS Users List */
.pos-users-section h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.pos-users-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.pos-user-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.pos-user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.pos-user-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-success);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pos-user-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.pos-user-icon.inactive {
    background: var(--glass-bg);
}

.pos-user-icon.inactive svg {
    color: var(--text-muted);
}

.pos-user-details h5 {
    font-size: 0.9375rem;
    font-weight: 600;
}

.pos-user-details span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.pos-user-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.pos-user-actions button {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.pos-user-actions button svg {
    width: 18px;
    height: 18px;
}

.pos-user-actions .view-btn {
    background: var(--glass-bg);
    color: var(--text-secondary);
}

.pos-user-actions .view-btn:hover {
    background: var(--primary);
    color: white;
}

.pos-user-actions .delete-btn {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.pos-user-actions .delete-btn:hover {
    background: var(--danger);
    color: white;
}

/* =====================================================
   History Tab
   ===================================================== */
.filter-bar {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar {
    display: none;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--primary);
}

.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.transactions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.transaction-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.transaction-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.transaction-icon svg {
    width: 22px;
    height: 22px;
}

.transaction-icon.success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.transaction-icon.pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.transaction-icon.failed {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.transaction-details {
    flex: 1;
    min-width: 0;
}

.transaction-details h5 {
    font-size: 0.9375rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.transaction-details span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.transaction-amount {
    text-align: right;
    flex-shrink: 0;
}

.transaction-amount strong {
    display: block;
    font-size: 1rem;
    font-weight: 700;
}

.transaction-amount.success strong {
    color: var(--success);
}

.transaction-amount.failed strong {
    color: var(--danger);
}

.transaction-amount span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* =====================================================
   POS Dashboard
   ===================================================== */
.pos-header {
    background: var(--gradient-success);
    margin: calc(-1 * var(--spacing-md));
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.pos-badge-large {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pos-badge-large svg {
    width: 24px;
    height: 24px;
    color: white;
}

.pos-header .user-info h3 {
    color: white;
}

.pos-id-display {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.8);
    font-family: 'Courier New', monospace;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
}

.connection-status .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning);
    animation: blink 1s ease-in-out infinite;
}

.connection-status.connected .status-dot {
    background: white;
    animation: none;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* POS Card Section */
.pos-card-section {
    margin-bottom: var(--spacing-xl);
}

.pos-waiting {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.waiting-animation {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-lg);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pulse-ring {
    position: absolute;
    inset: 0;
    border: 2px solid var(--primary);
    border-radius: 50%;
    animation: pulseRing 2s ease-out infinite;
}

.pulse-ring.delay-1 {
    animation-delay: 1s;
}

@keyframes pulseRing {
    0% {
        opacity: 1;
        transform: scale(0.8);
    }

    100% {
        opacity: 0;
        transform: scale(1.3);
    }
}

.waiting-icon {
    width: 50px;
    height: 50px;
    color: var(--primary);
}

.waiting-icon svg {
    width: 100%;
    height: 100%;
}

.pos-waiting h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.pos-waiting p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Card Received */
.card-received {
    text-align: center;
    padding: var(--spacing-xl);
    animation: cardReceiveAnim 0.5s ease;
}

@keyframes cardReceiveAnim {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.received-card {
    width: 200px;
    height: 120px;
    margin: 0 auto var(--spacing-lg);
    perspective: 1000px;
}

.card-front.mini {
    width: 100%;
    height: 100%;
    background: var(--gradient-card);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

.card-chip-mini {
    width: 35px;
    height: 25px;
    background: var(--gradient-gold);
    border-radius: 4px;
}

.card-number-mini {
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
}

.received-info h3 {
    font-size: 1.25rem;
    color: var(--success);
    margin-bottom: var(--spacing-xs);
}

.received-info p {
    color: var(--text-secondary);
}

/* Payment Section */
.payment-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.payment-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.amount-input-container {
    display: flex;
    align-items: center;
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 2px solid var(--glass-border);
    transition: all var(--transition-base);
}

.amount-input-container:focus-within {
    border-color: var(--success);
}

.currency-symbol {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-right: var(--spacing-sm);
}

.amount-input-container input {
    flex: 1;
    background: transparent;
    border: none;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: inherit;
}

.amount-input-container input::placeholder {
    color: var(--text-muted);
}

.amount-input-container input:focus {
    outline: none;
}

/* Transaction Result */
.transaction-result {
    text-align: center;
    padding: var(--spacing-2xl);
    animation: fadeSlideUp 0.4s ease;
}

.result-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: resultBounce 0.6s ease;
}

.result-icon.success {
    background: var(--gradient-success);
}

.result-icon.failed {
    background: var(--danger);
}

@keyframes resultBounce {
    0% {
        transform: scale(0);
    }

    50% {
        transform: scale(1.2);
    }

    70% {
        transform: scale(0.9);
    }

    100% {
        transform: scale(1);
    }
}

.result-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.transaction-result h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.result-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--success);
    margin-bottom: var(--spacing-xs);
}

.result-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* POS Footer */
.pos-footer {
    margin-top: auto;
    padding-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
}

.pos-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Waiting for Amount */
.waiting-amount {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.amount-waiting-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    color: var(--primary);
    animation: pulse 2s ease-in-out infinite;
}

.amount-waiting-icon svg {
    width: 100%;
    height: 100%;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.1);
    }
}

.waiting-amount p {
    margin-bottom: var(--spacing-xs);
}

.waiting-amount .hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Amount Received */
.amount-received {
    text-align: center;
    padding: var(--spacing-lg);
}

.amount-display {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--success);
}

.amount-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.amount-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--success);
    margin: var(--spacing-sm) 0;
}

.amount-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* Card Ready State */
.card-ready {
    text-align: center;
    padding: var(--spacing-xl);
    animation: fadeSlideUp 0.4s ease;
}

.card-ready .received-card {
    margin-bottom: var(--spacing-lg);
}

.card-ready .status-text {
    font-size: 0.875rem;
    color: var(--primary);
    margin-top: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

/* Payment Processing State */
.payment-processing {
    text-align: center;
    padding: var(--spacing-2xl);
    animation: fadeSlideUp 0.4s ease;
}

.processing-animation {
    margin-bottom: var(--spacing-lg);
}

.spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto;
    border: 4px solid var(--glass-border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.payment-processing h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.processing-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}

/* Payment Success State */
.payment-success {
    text-align: center;
    padding: var(--spacing-2xl);
    animation: fadeSlideUp 0.4s ease;
}

.success-animation {
    margin-bottom: var(--spacing-lg);
}

.success-animation .success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    background: var(--gradient-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: resultBounce 0.6s ease;
}

.success-animation .success-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.payment-success h3 {
    font-size: 1.5rem;
    color: var(--success);
    margin-bottom: var(--spacing-sm);
}

.success-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--success);
    margin-bottom: var(--spacing-xs);
}

.success-desc {
    color: var(--text-secondary);
}

/* Card Active State - Friend receiving card */
.card-active {
    text-align: center;
    padding: var(--spacing-xl);
    animation: fadeSlideUp 0.4s ease;
}

.card-active .received-card {
    margin-bottom: var(--spacing-lg);
}

.pulse-green {
    animation: pulseGreen 2s ease-in-out infinite;
}

@keyframes pulseGreen {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }

    50% {
        box-shadow: 0 0 20px 10px rgba(16, 185, 129, 0.2);
    }
}

.card-active .received-info h3 {
    font-size: 1.5rem;
    color: var(--success);
    margin-bottom: var(--spacing-sm);
}

.card-active .owner-name {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.instruction-box {
    background: var(--bg-card);
    border: 2px dashed var(--success);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.instruction-box .instruction-icon {
    width: 48px;
    height: 48px;
    background: var(--success);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.instruction-box .instruction-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.instruction-box p {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: left;
}

/* =====================================================
   Toast Notifications
   ===================================================== */
#toast-container {
    position: fixed;
    top: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    width: calc(100% - 2 * var(--spacing-md));
    max-width: 400px;
    pointer-events: none;
}

.toast {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    animation: toastSlide 0.3s ease;
    pointer-events: auto;
}

@keyframes toastSlide {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.toast.removing {
    animation: toastRemove 0.3s ease forwards;
}

@keyframes toastRemove {
    to {
        opacity: 0;
        transform: translateY(-20px);
    }
}

.toast-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-icon svg {
    width: 18px;
    height: 18px;
}

.toast.success .toast-icon {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.toast.error .toast-icon {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.toast.info .toast-icon {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary);
}

.toast-content {
    flex: 1;
}

.toast-content strong {
    display: block;
    font-size: 0.9375rem;
    margin-bottom: 2px;
}

.toast-content p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* =====================================================
   Responsive Adjustments
   ===================================================== */
@media (max-width: 380px) {
    :root {
        font-size: 14px;
    }

    .credit-card {
        max-width: 280px;
        height: 170px;
    }

    .card-number {
        font-size: 1.125rem;
        letter-spacing: 2px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 481px) {
    .container {
        padding: var(--spacing-lg);
    }

    .modal-content {
        padding: var(--spacing-2xl);
    }
}

/* Safe area insets for notched devices */
@supports (padding-top: env(safe-area-inset-top)) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
}