/* ===== CSS Custom Properties ===== */
:root {
    --bg-primary: #0a0a0a;
    --bg-surface: rgba(255, 255, 255, 0.03);
    --text-primary: #f1f5f9;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.4);
    --success: #22c55e;
    --danger: #ef4444;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --transition-speed: 0.3s;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --gradient-bg: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-surface: rgba(0, 0, 0, 0.02);
    --text-primary: #0f172a;
    --text-muted: #64748b;
    --border-color: rgba(0, 0, 0, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --gradient-bg: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #dbeafe 100%);
}

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

body {
    font-family: var(--font-stack);
    background: var(--gradient-bg);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    transition: background var(--transition-speed), color var(--transition-speed);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--accent-hover);
}

/* ===== Navbar ===== */
.navbar-app {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 0.75rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-app .navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-app .nav-link {
    color: var(--text-muted) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-speed);
}

.navbar-app .nav-link:hover,
.navbar-app .nav-link.active {
    color: var(--text-primary) !important;
    background: var(--bg-surface);
}

.theme-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    font-size: 1.1rem;
}

.theme-toggle:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* ===== Glass Card ===== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--glass-shadow);
    padding: 2rem;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .glass-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* ===== Auth Pages (Login/Register) ===== */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.auth-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    animation: fadeInUp 0.5s ease-out;
}

.auth-card h2 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.auth-card .text-muted {
    color: var(--text-muted) !important;
}

/* ===== Form Styles ===== */
.form-floating > .form-control {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.form-floating > .form-control:focus {
    background: var(--bg-surface);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    color: var(--text-primary);
}

.form-floating > label {
    color: var(--text-muted);
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--accent);
}

/* ===== Buttons ===== */
.btn-accent {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: all var(--transition-speed);
}

.btn-accent:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-glass {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all var(--transition-speed);
}

.btn-glass:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* ===== Password Toggle ===== */
.input-group-password {
    position: relative;
}

.input-group-password .form-control {
    padding-right: 3rem;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    z-index: 5;
    padding: 0.25rem;
}

.password-toggle:hover {
    color: var(--accent);
}

/* ===== Dashboard ===== */
.dashboard-wrapper {
    padding: 2rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.balance-card {
    text-align: center;
    padding: 2.5rem 2rem;
    margin-bottom: 2rem;
}

.balance-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.balance-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.balance-amount .currency {
    color: var(--accent);
}

.account-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.action-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.action-card {
    padding: 1.5rem;
}

.action-card h5 {
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-card .form-control {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
}

.action-card .form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.action-card .form-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ===== Transactions Table ===== */
.transactions-wrapper {
    padding: 2rem 1rem;
    max-width: 900px;
    margin: 0 auto;
}

.table-glass {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.table-glass thead th {
    background: var(--bg-surface);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.table-glass tbody td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

.table-glass tbody tr {
    transition: background var(--transition-speed);
}

.table-glass tbody tr:hover {
    background: var(--bg-surface);
}

.amount-positive {
    color: var(--success);
    font-weight: 600;
}

.amount-negative {
    color: var(--danger);
    font-weight: 600;
}

.badge-type {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-deposit {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.badge-withdrawal {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.badge-transfer-out {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.badge-transfer-in {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* ===== Alert Styles ===== */
.alert-glass {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
}

.alert-glass-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--success);
}

/* ===== Footer ===== */
.footer-app {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--glass-border);
    padding: 1.25rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
}

.footer-app a {
    color: var(--accent);
    font-weight: 500;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.5s ease-out;
}

.fade-in-delay-1 { animation-delay: 0.1s; animation-fill-mode: both; }
.fade-in-delay-2 { animation-delay: 0.2s; animation-fill-mode: both; }
.fade-in-delay-3 { animation-delay: 0.3s; animation-fill-mode: both; }

/* ===== Chat Widget ===== */
.chat-fab {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 16px var(--accent-glow);
    transition: all var(--transition-speed);
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-fab:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.chat-panel {
    position: fixed;
    bottom: 5.5rem;
    right: 1.5rem;
    width: 360px;
    max-height: 480px;
    border-radius: var(--border-radius);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    display: none;
    flex-direction: column;
    z-index: 1100;
    animation: fadeInUp 0.3s ease-out;
}

.chat-panel.open {
    display: flex;
}

.chat-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 200px;
    max-height: 320px;
}

.chat-msg {
    padding: 0.625rem 0.875rem;
    border-radius: 12px;
    font-size: 0.875rem;
    line-height: 1.4;
    max-width: 85%;
    word-wrap: break-word;
}

.chat-msg.user {
    background: var(--accent);
    color: #fff;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-msg.bot {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.chat-msg.bot.loading {
    color: var(--text-muted);
    font-style: italic;
}

.chat-input-area {
    padding: 0.75rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 0.5rem;
}

.chat-input-area input {
    flex: 1;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    outline: none;
}

.chat-input-area input:focus {
    border-color: var(--accent);
}

.chat-input-area button {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    transition: background var(--transition-speed);
}

.chat-input-area button:hover {
    background: var(--accent-hover);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .balance-amount {
        font-size: 2.25rem;
    }

    .account-info {
        flex-direction: column;
        gap: 0.5rem;
    }

    .action-cards {
        grid-template-columns: 1fr;
    }

    .glass-card {
        padding: 1.5rem;
    }

    .table-glass thead th,
    .table-glass tbody td {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .balance-amount {
        font-size: 1.75rem;
    }

    .auth-card {
        padding: 1.5rem;
    }
}