/* ==========================================================================
   Kirato Mail - Modern Light/Dark Flexible Theme System
   ========================================================================== */

:root {
    /* Light Theme (Default) */
    --bg-page: #f8fafc;
    --bg-hero: linear-gradient(180deg, #fdf4ff 0%, #f5f3ff 50%, #f8fafc 100%);
    --bg-card: #ffffff;
    --bg-input: #f8fafc;
    --bg-input-border: #f1f5f9;
    --border-card: #e2e8f0;
    --border-focus: #6366f1;

    --primary-purple: #6366f1;
    --primary-hover: #4f46e5;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    --bg-btn-action: #f1f5f9;
    --bg-btn-action-hover: #e2e8f0;
    --bg-nav: rgba(255, 255, 255, 0.85);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;

    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-subtle: 0 10px 30px -5px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.02);
}

/* --------------------------------------------------------------------------
   Dark Theme Overrides
   -------------------------------------------------------------------------- */
body.dark-theme {
    --bg-page: #090c10;
    --bg-hero: linear-gradient(180deg, #151121 0%, #0d0f17 50%, #090c10 100%);
    --bg-card: #121824;
    --bg-input: #1a2233;
    --bg-input-border: #232e42;
    --border-card: #212a3d;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;

    --bg-btn-action: #1e2738;
    --bg-btn-action-hover: #2a364d;
    --bg-nav: rgba(18, 24, 36, 0.85);

    --shadow-subtle: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-page);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* --------------------------------------------------------------------------
   Top Navigation Bar
   -------------------------------------------------------------------------- */
.top-nav {
    height: 70px;
    background: var(--bg-nav);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    border-bottom: 1px solid var(--border-card);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-logo-custom {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 3px 10px rgba(212, 163, 71, 0.4));
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.brand-logo-custom:hover {
    transform: scale(1.06);
}

.brand-name {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 2.5px;
    font-family: 'Outfit', sans-serif;
    text-transform: uppercase;
    background: linear-gradient(135deg, #fef0a0 0%, #d4a347 50%, #b88328 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-a {
    font-size: 1.0rem;
    display: inline-block;
    margin: 0 1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 18px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s ease;
    cursor: pointer;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.theme-toggle-btn {
    background: var(--bg-btn-action);
    border: 1px solid var(--border-card);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
    background: var(--bg-btn-action-hover);
    color: var(--primary-purple);
}

/* --------------------------------------------------------------------------
   Floating Gold Donate Button
   -------------------------------------------------------------------------- */
.btn-donate-gold {
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 9999;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #0f172a;
    border: none;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 800;
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-donate-gold:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 12px 30px rgba(245, 158, 11, 0.6);
    background: linear-gradient(135deg, #fcd34d, #f59e0b);
}

/* --------------------------------------------------------------------------
   Donate & Terms Modals
   -------------------------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 1;
    transition: opacity 0.25s ease;
}

.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 24px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    text-align: center;
    animation: modalPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.terms-modal-card {
    max-width: 720px;
    max-height: 85vh;
    overflow-y: auto;
    text-align: left;
    padding: 36px;
}

@keyframes modalPop {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 1.8rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

.modal-close-btn:hover {
    color: var(--text-primary);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 6px;
}

.modal-header h2 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
}

.modal-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Black Box for Bitcoin */
.crypto-black-box {
    background: #05070a;
    border: 1px solid #1e293b;
    border-radius: 16px;
    padding: 20px;
    text-align: left;
    color: #ffffff;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.crypto-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #f59e0b;
    font-weight: 700;
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.crypto-icon {
    font-size: 1.3rem;
}

.crypto-address-text {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.92rem;
    color: #38bdf8;
    background: #0f172a;
    border: 1px dashed #334155;
    padding: 12px 14px;
    border-radius: 10px;
    word-break: break-all;
    font-weight: 700;
    margin-bottom: 14px;
}

.btn-copy-btc {
    width: 100%;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #0f172a;
    border: none;
    padding: 12px;
    border-radius: 10px;
    font-weight: 800;
    font-size: 0.95rem;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.btn-copy-btc:hover {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

/* Terms Modal Styling */
.terms-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-purple);
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-card);
    padding-bottom: 12px;
    letter-spacing: -0.5px;
}

.terms-section {
    margin-bottom: 20px;
}

.terms-section h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.terms-section p, .terms-section ul {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.terms-section ul {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.terms-section strong {
    color: var(--text-primary);
    font-weight: 700;
}

.btn-agree-terms {
    background: var(--primary-purple);
    color: #ffffff;
    border: none;
    padding: 12px 28px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.92rem;
    cursor: pointer;
    margin-top: 20px;
    float: right;
    transition: background 0.2s ease;
}

.btn-agree-terms:hover {
    background: var(--primary-hover);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
    background: var(--bg-hero);
    padding: 50px 20px 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: background 0.3s ease;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -1px;
    margin-bottom: 8px;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Email Generator Box */
.email-generator-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    padding: 8px;
    border-radius: 16px;
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-subtle);
    max-width: 600px;
    width: 100%;
    margin-bottom: 24px;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.input-wrapper {
    flex: 1;
}

.input-wrapper input {
    width: 100%;
    border: 1px solid var(--bg-input-border);
    background: var(--bg-input);
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s, background 0.3s ease;
}

.input-wrapper input:focus {
    border-color: var(--primary-purple);
}

.select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.select-wrapper select {
    appearance: none;
    border: 1px solid var(--bg-input-border);
    background: var(--bg-input);
    border-radius: 10px;
    padding: 12px 36px 12px 16px;
    font-size: 0.92rem;
    font-weight: 500;
    font-family: inherit;
    color: var(--text-secondary);
    cursor: pointer;
    outline: none;
    transition: background 0.3s ease, color 0.3s ease;
}

.select-arrow {
    position: absolute;
    right: 12px;
    font-size: 0.75rem;
    color: var(--text-muted);
    pointer-events: none;
}

.btn-get-email {
    background: var(--primary-purple);
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-get-email:hover {
    background: var(--primary-hover);
}

/* Active Address Bar */
.active-address-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    padding: 10px 22px;
    border-radius: 36px;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.05);
    transition: background 0.3s ease, border-color 0.3s ease;
    flex-wrap: wrap;
}

.address-info-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.address-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.address-value {
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--primary-purple);
}

.address-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-action {
    background: var(--bg-btn-action);
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 7px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
    outline: none;
}

.btn-action:hover {
    background: var(--bg-btn-action-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.action-divider {
    width: 1px;
    height: 22px;
    background: var(--border-card);
    margin: 0 4px;
}

/* Outstanding Compose Button in Address Bar */
.btn-action.btn-compose-highlight {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
    font-weight: 700;
}

.btn-action.btn-compose-highlight:hover {
    background: linear-gradient(135deg, #4f46e5, #4338ca);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.45);
}

/* Outstanding Simulate Button in Address Bar */
.btn-action.btn-simulate-highlight {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-purple);
    border: 1px dashed rgba(99, 102, 241, 0.5);
    font-weight: 700;
}

.btn-action.btn-simulate-highlight:hover {
    background: rgba(99, 102, 241, 0.2);
    border-style: solid;
    border-color: var(--primary-purple);
    transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Dashboard Main Layout (Sidebar + Content Column Grid - Image 1 & 2)
   -------------------------------------------------------------------------- */
.dashboard-container {
    max-width: 1380px;
    width: 100%;
    margin: 30px auto 60px;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px;
    align-items: start;
}

@media (max-width: 1024px) {
    .dashboard-container {
        grid-template-columns: 1fr;
    }
}

.sidebar-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.main-content-column {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

/* Widget Cards Base */
.widget-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 18px;
    padding: 22px;
    box-shadow: var(--shadow-subtle);
    transition: background 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
}

.widget-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
}

.widget-header {
    margin-bottom: 18px;
}

.widget-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.widget-sub {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary-purple);
    margin-top: 2px;
    display: block;
}

/* Steps Flow List (Image 2) */
.steps-flow {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.step-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 14px;
    background: var(--bg-input);
    border: 1px solid var(--bg-input-border);
    transition: all 0.2s ease;
}

.step-card:hover {
    background: var(--bg-card);
    border-color: var(--primary-purple);
    transform: translateX(3px);
}

.step-num {
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--primary-purple);
    background: rgba(99, 102, 241, 0.12);
    padding: 4px 8px;
    border-radius: 8px;
    flex-shrink: 0;
}

.step-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.step-info h4 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
}

.step-info p {
    font-size: 0.74rem;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.3;
}

.step-arrow {
    display: flex;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.72rem;
    margin: -2px 0;
    opacity: 0.5;
}

/* Features List Widget (Image 2) */
.features-widget {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.feature-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.feature-info h4 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.feature-info p {
    font-size: 0.74rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* --------------------------------------------------------------------------
   Main Content Layout (Inbox & Reader)
   -------------------------------------------------------------------------- */
.content-container {
    width: 100%;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 20px;
    height: 600px;
}

/* Inbox Card */
.inbox-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    box-shadow: var(--shadow-subtle);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.inbox-card-header {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.inbox-title {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.inbox-title i {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.inbox-title h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.unread-badge {
    background: var(--bg-btn-action);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 700;
}

.btn-icon-refresh {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.btn-icon-refresh:hover {
    color: var(--primary-purple);
    background: var(--bg-btn-action);
}

.email-list {
    flex: 1;
    overflow-y: auto;
}

.email-item {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-card);
    cursor: pointer;
    transition: background 0.15s ease;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.email-item:hover {
    background: var(--bg-btn-action);
}

.email-item.selected {
    background: rgba(99, 102, 241, 0.12);
    border-left: 4px solid var(--primary-purple);
}

.email-item.unread .item-subject {
    font-weight: 700;
    color: var(--text-primary);
}

.otp-badge-mini {
    background: #6366f1;
    color: #ffffff;
    padding: 1px 6px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-right: 4px;
}

.item-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-sender {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
}

.item-time {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.item-subject {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-snippet {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Empty Inbox State */
.empty-inbox-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
}

.empty-icon-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--bg-btn-action);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 14px;
}

.empty-inbox-state h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.empty-inbox-state p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Dual Inbox Action Bar (Compose + Simulate)
   -------------------------------------------------------------------------- */
.inbox-action-container {
    padding: 14px 16px;
    border-top: 1px solid var(--border-card);
    background: var(--bg-card);
}

.action-buttons-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.btn-action-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid var(--border-card);
    background: var(--bg-input);
    cursor: pointer;
    text-align: left;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn-action-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

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

/* Button 1: Compose Card */
.btn-compose-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(79, 70, 229, 0.06));
    border: 1.5px solid rgba(99, 102, 241, 0.4);
}

.btn-compose-card .btn-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--primary-purple);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
    flex-shrink: 0;
}

.btn-compose-card:hover {
    border-color: var(--primary-purple);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(79, 70, 229, 0.12));
}

.btn-compose-card .btn-card-title {
    color: var(--primary-purple);
}

/* Button 2: Simulate Card */
.btn-simulate-card {
    background: var(--bg-input);
    border: 1.5px dashed var(--border-card);
}

.btn-simulate-card .btn-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--bg-btn-action);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    border: 1px solid var(--border-card);
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.btn-simulate-card:hover {
    border-color: var(--primary-purple);
    border-style: solid;
}

.btn-simulate-card:hover .btn-card-icon {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-purple);
}

/* Text inside action cards */
.btn-card-text {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.btn-card-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-card-sub {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-muted);
    line-height: 1.3;
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* --------------------------------------------------------------------------
   Gmail-style Compose Popup Window
   -------------------------------------------------------------------------- */
.compose-window {
    position: fixed;
    bottom: 0;
    right: 30px;
    width: 540px;
    max-width: calc(100vw - 40px);
    height: 480px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-bottom: none;
    border-top-left-radius: 14px;
    border-top-right-radius: 14px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), height 0.3s ease, opacity 0.2s ease;
    overflow: hidden;
}

.compose-window.hidden {
    display: none !important;
}

.compose-window.minimized {
    height: 44px !important;
}

.compose-window.minimized .compose-body,
.compose-window.minimized .compose-footer {
    display: none !important;
}

.compose-header {
    height: 44px;
    background: #202124;
    color: #ffffff;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
    user-select: none;
}

body.dark-theme .compose-header {
    background: #1a2233;
}

.compose-title {
    font-size: 0.9rem;
    font-weight: 600;
}

.compose-window-controls {
    display: flex;
    align-items: center;
    gap: 4px;
}

.win-btn {
    background: transparent;
    border: none;
    color: #9aa0a6;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    transition: background 0.15s ease, color 0.15s ease;
}

.win-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
}

.compose-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 8px 16px;
    background: var(--bg-card);
    overflow-y: auto;
}

.compose-field {
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-card);
    padding: 6px 0;
    gap: 8px;
}

.compose-field label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 30px;
}

.compose-field input {
    flex: 1;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    outline: none;
}

.cc-bcc-toggle {
    display: flex;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-muted);
    cursor: pointer;
}

.compose-text-area {
    flex: 1;
    min-height: 180px;
    padding: 12px 0;
    outline: none;
    font-family: inherit;
    font-size: 0.92rem;
    color: var(--text-primary);
    line-height: 1.5;
    word-break: break-word;
    overflow-y: auto;
}

.compose-text-area[placeholder]:empty:before {
    content: attr(placeholder);
    color: var(--text-muted);
}

.compose-footer {
    padding: 10px 16px;
    border-top: 1px solid var(--border-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.send-split-btn {
    display: flex;
    align-items: center;
    background: var(--primary-purple);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.btn-send-main {
    background: transparent;
    border: none;
    color: #ffffff;
    padding: 8px 18px;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.2s ease;
}

.btn-send-main:hover {
    background: var(--primary-hover);
}

.btn-send-dropdown {
    background: transparent;
    border: none;
    border-left: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    padding: 8px 10px;
    font-size: 0.75rem;
    cursor: pointer;
}

.toolbar-icons {
    display: flex;
    align-items: center;
    gap: 4px;
}

.tool-icon {
    background: transparent;
    border: none;
    color: var(--text-muted);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.88rem;
    transition: all 0.15s ease;
}

.tool-icon:hover {
    background: var(--bg-btn-action-hover);
    color: var(--text-primary);
}

.btn-discard {
    background: transparent;
    border: none;
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    transition: all 0.15s ease;
}

.btn-discard:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

/* Reader Card */
.reader-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    box-shadow: var(--shadow-subtle);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.empty-reader-state {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
}

.sync-graphic {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.08);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sync-arrows {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 7rem;
    color: rgba(99, 102, 241, 0.15);
}

.envelope-center {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    z-index: 2;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.2);
}

/* Reader Content */
.reader-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.reader-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-card);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.reader-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.reader-actions {
    display: flex;
    gap: 8px;
}

.icon-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--border-card);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

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

.sender-info-card {
    padding: 14px 24px;
    background: var(--bg-btn-action);
    border-bottom: 1px solid var(--border-card);
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-purple);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.meta-details {
    flex: 1;
}

.sender-name-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sender-email {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.recipient-row {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.mail-date {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.mail-body-container {
    flex: 1;
    padding: 20px;
    background: #ffffff;
}

#mailFrame {
    width: 100%;
    height: 100%;
    border: none;
}

.hidden {
    display: none !important;
}

.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 1000;
}

.toast {
    background: var(--primary-purple);
    color: #ffffff;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 0.88rem;
    box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}