/* =============================================
   DAINZZ Mail — Dark Neon Theme
   Inspired by reference design (diseño.png)
   ============================================= */

/* ── Google Font ─────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Custom Properties ───────────────────── */
:root {
    /* Backgrounds */
    --bg-primary:    #0a0a1a;
    --bg-secondary:  #111827;
    --bg-card:       #1a1a2e;
    --bg-card-hover: #1f1f3a;
    --bg-input:      #16213e;
    --bg-overlay:    rgba(0, 0, 0, 0.7);

    /* Accents */
    --accent-purple: #8b5cf6;
    --accent-pink:   #ec4899;
    --accent-cyan:   #06b6d4;
    --accent-teal:   #14b8a6;
    --accent-red:    #ef4444;
    --accent-green:  #22c55e;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #8b5cf6, #ec4899);
    --gradient-btn:     linear-gradient(135deg, #c02060, #e0406a);
    --gradient-btn-hover: linear-gradient(135deg, #a01850, #c83058);
    --gradient-cyan:    linear-gradient(135deg, #06b6d4, #14b8a6);

    /* Text */
    --text-primary:   #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted:     #64748b;
    --text-accent:    #c084fc;

    /* Borders */
    --border-subtle:  rgba(139, 92, 246, 0.15);
    --border-card:    rgba(139, 92, 246, 0.2);
    --border-hover:   rgba(139, 92, 246, 0.4);
    --border-input:   rgba(100, 116, 139, 0.3);

    /* Shadows */
    --shadow-card:    0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-glow:    0 0 20px rgba(139, 92, 246, 0.2);
    --shadow-btn:     0 4px 15px rgba(192, 32, 96, 0.4);

    /* Sizing */
    --radius-sm:  8px;
    --radius-md:  12px;
    --radius-lg:  16px;
    --radius-xl:  20px;
    --radius-pill: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-med:  0.25s ease;
    --transition-slow: 0.4s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ── Animated Background ─────────────────────── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(139, 92, 246, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(236, 72, 153, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* ── Header ──────────────────────────────────── */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px 24px;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-glow);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 1px;
    color: var(--text-primary);
    text-transform: uppercase;
}

.logo-icon {
    width: 28px;
    height: 28px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

/* ── Main Container ──────────────────────────── */
.main-container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 24px;
    min-height: calc(100vh - 65px);
    align-content: start;
}

/* ── Glass Card ──────────────────────────────── */
.card {
    background: rgba(26, 26, 46, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

/* ── Right Panel: Search Card ────────────────── */
.search-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.search-card {
    padding: 32px 28px;
    text-align: center;
}

.search-card .brand-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 16px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-card);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.25);
    transition: box-shadow var(--transition-med);
}

.search-card .brand-icon:hover {
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.4);
}

.search-card h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.input-group {
    position: relative;
    margin-bottom: 16px;
}

.input-group input {
    width: 100%;
    padding: 14px 48px 14px 18px;
    background: var(--bg-input);
    border: 1px solid var(--border-input);
    border-radius: var(--radius-pill);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.input-group input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.btn-copy {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 16px;
}

.btn-copy:hover {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
}

.btn-copy.copied {
    color: var(--accent-green);
}

.btn-primary {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: var(--radius-pill);
    background: var(--gradient-btn);
    color: white;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-btn);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary:hover {
    background: var(--gradient-btn-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(192, 32, 96, 0.5);
}

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

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

/* ── Actions Card ────────────────────────────── */
.actions-card {
    padding: 20px 28px;
}

.actions-card h3 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-action {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-input);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.btn-action.danger:hover {
    border-color: rgba(239, 68, 68, 0.4);
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.btn-action .icon {
    font-size: 16px;
}

/* ── Left Panel: Inbox ───────────────────────── */
.inbox-panel {
    display: flex;
    flex-direction: column;
}

.inbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-subtle);
}

.inbox-header h2 {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.inbox-header h2 .icon {
    color: var(--accent-cyan);
}

.mail-count {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--bg-input);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
}

/* ── Mail List ───────────────────────────────── */
.mail-list {
    flex: 1;
    overflow-y: auto;
    max-height: calc(100vh - 200px);
}

.mail-list::-webkit-scrollbar {
    width: 6px;
}

.mail-list::-webkit-scrollbar-track {
    background: transparent;
}

.mail-list::-webkit-scrollbar-thumb {
    background: var(--accent-cyan);
    border-radius: 3px;
}

.mail-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-subtle);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.mail-item:hover {
    background: var(--bg-card-hover);
}

.mail-item.active {
    background: rgba(139, 92, 246, 0.1);
    border-left: 3px solid var(--accent-purple);
}

.mail-item.unread {
    background: rgba(6, 182, 212, 0.04);
}

.mail-item.unread .mail-subject {
    font-weight: 600;
    color: var(--text-primary);
}

.mail-item.unread::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-cyan);
}

.mail-avatar {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: white;
    flex-shrink: 0;
    text-transform: uppercase;
}

.mail-content {
    flex: 1;
    min-width: 0;
}

.mail-sender {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mail-subject {
    font-size: 0.82rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 400;
}

.mail-time {
    font-size: 0.72rem;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
    align-self: flex-start;
    margin-top: 2px;
}

/* ── Load More ───────────────────────────────── */
.load-more-container {
    padding: 16px 24px;
    text-align: center;
}

.btn-load-more {
    padding: 10px 24px;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--text-accent);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-load-more:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: var(--border-hover);
}

/* ── Empty State ─────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 64px 32px;
    text-align: center;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 56px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.85rem;
    max-width: 280px;
    line-height: 1.5;
}

/* ── Message Detail Panel ────────────────────── */
.message-detail {
    padding: 28px;
    display: none;
    animation: fadeSlideUp 0.3s ease;
}

.message-detail.visible {
    display: block;
}

.detail-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-subtle);
}

.detail-from {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.detail-from strong {
    color: var(--text-primary);
}

.detail-subject {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
}

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

.btn-close-detail {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-input);
    border-radius: 50%;
    background: var(--bg-input);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.btn-close-detail:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

.detail-body {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text-secondary);
    word-break: break-word;
    overflow-wrap: break-word;
    overflow: auto;
}

.detail-body h2 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.detail-body p {
    margin-bottom: 10px;
}

.detail-body a {
    color: var(--accent-cyan);
    text-decoration: none;
}

.detail-body a:hover {
    text-decoration: underline;
}

.detail-body ul, .detail-body ol {
    margin-left: 20px;
    margin-bottom: 10px;
}

/* ── Loading Spinner ─────────────────────────── */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ── Toast Notification ──────────────────────── */
.toast {
    position: fixed;
    bottom: 32px;
    right: 32px;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition-med);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: rgba(34, 197, 94, 0.4);
}

.toast.error {
    border-color: rgba(239, 68, 68, 0.4);
}

/* ── Modal Overlay ───────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(8px);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-med);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    width: 90%;
    max-width: 640px;
    max-height: 80vh;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-xl);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-med);
    padding: 32px;
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal::-webkit-scrollbar {
    width: 4px;
}

.modal::-webkit-scrollbar-thumb {
    background: var(--accent-purple);
    border-radius: 2px;
}

/* ── Polling Indicator ───────────────────────── */
.polling-indicator {
    position: fixed;
    top: 80px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.72rem;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: 90;
}

.polling-indicator.active {
    opacity: 1;
}

.polling-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-green);
    animation: pulse 2s infinite;
}

/* ── Keyframes ───────────────────────────────── */
@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.4; }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-12px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 900px) {
    .main-container {
        grid-template-columns: 1fr;
        padding: 16px;
    }

    .search-panel {
        order: -1;
    }

    .mail-list {
        max-height: 50vh;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 12px 16px;
    }

    .logo {
        font-size: 0.95rem;
        padding: 6px 16px;
    }

    .search-card {
        padding: 24px 20px;
    }

    .mail-item {
        padding: 12px 16px;
    }

    .mail-avatar {
        width: 36px;
        height: 36px;
        font-size: 0.8rem;
    }

    .modal {
        width: 95%;
        padding: 24px;
    }
}