/* ==========================================================================
   TrackMail Design System — Base
   Ancient communication meets modern email intelligence
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,500;0,600;0,700;1,500&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

:root {
    /* Paper & parchment */
    --paper-bg: #f5f0e8;
    --paper-light: #faf7f2;
    --paper-card: rgba(253, 251, 247, 0.92);
    --paper-card-solid: #fdfbf7;
    --paper-border: rgba(168, 148, 120, 0.22);
    --paper-border-strong: rgba(139, 115, 85, 0.35);

    /* Dark correspondence */
    --ink-dark: #1a1814;
    --ink-sidebar: #1e1c18;
    --ink-muted: #4a4035;
    --ink-subtle: #7a6f63;

    /* Bronze & gold accents */
    --bronze: #a67c52;
    --bronze-light: #c9a962;
    --bronze-dark: #8b6914;
    --gold-glow: rgba(201, 169, 98, 0.18);
    --gold-glow-strong: rgba(201, 169, 98, 0.32);

    /* Semantic colors */
    --success: #3d7a5f;
    --success-bg: rgba(61, 122, 95, 0.1);
    --danger: #a04444;
    --danger-bg: rgba(160, 68, 68, 0.1);
    --warning: #b8860b;
    --warning-bg: rgba(184, 134, 11, 0.1);
    --info: #5a7a8c;
    --info-bg: rgba(90, 122, 140, 0.1);

    /* Shadows & glass */
    --shadow-sm: 0 1px 3px rgba(26, 24, 20, 0.06), 0 1px 2px rgba(26, 24, 20, 0.04);
    --shadow-md: 0 4px 16px rgba(26, 24, 20, 0.08), 0 2px 6px rgba(26, 24, 20, 0.04);
    --shadow-lg: 0 12px 40px rgba(26, 24, 20, 0.12), 0 4px 12px rgba(26, 24, 20, 0.06);
    --shadow-hover: 0 16px 48px rgba(26, 24, 20, 0.14), 0 6px 16px rgba(26, 24, 20, 0.08);
    --glass-bg: rgba(253, 251, 247, 0.75);
    --glass-border: rgba(255, 255, 255, 0.6);

    /* Layout */
    --sidebar-width: 268px;
    --header-height: 64px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------------
   Reset & Typography
   -------------------------------------------------------------------------- */

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'DM Sans', system-ui, sans-serif;
    background-color: var(--paper-bg);
    background-image:
        radial-gradient(ellipse at 20% 0%, rgba(201, 169, 98, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(166, 124, 82, 0.06) 0%, transparent 50%);
    color: var(--ink-muted);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6,
.display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
    font-family: 'Cormorant Garamond', Georgia, serif;
    color: var(--ink-dark);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.page-title {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
}

.page-subtitle {
    color: var(--ink-subtle);
    font-size: 0.875rem;
    margin-bottom: 0;
}

.gradient-text {
    background: linear-gradient(135deg, var(--bronze-dark) 0%, var(--bronze-light) 50%, var(--bronze) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-bronze { color: var(--bronze) !important; }
.text-ink { color: var(--ink-dark) !important; }

/* --------------------------------------------------------------------------
   App Layout
   -------------------------------------------------------------------------- */

.app-container {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow-x: hidden;
}

.content-body {
    padding: 1.75rem 2rem 2.5rem;
    flex: 1;
}

.page-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.page-header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

/* --------------------------------------------------------------------------
   Sidebar
   -------------------------------------------------------------------------- */

.sidebar-wrapper {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--ink-sidebar) 0%, #141210 100%);
    color: #e8e0d4;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    border-right: 1px solid rgba(201, 169, 98, 0.12);
    transition: transform var(--transition), margin-left var(--transition);
    z-index: 1040;
}

.sidebar-brand {
    padding: 1.375rem 1.5rem;
    border-bottom: 1px solid rgba(201, 169, 98, 0.1);
}

.sidebar-brand a {
    color: #f5f0e8;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    transition: opacity var(--transition);
}

.sidebar-brand a:hover {
    opacity: 0.9;
    color: #f5f0e8;
}

.sidebar-brand a i {
    color: var(--bronze-light);
    font-size: 1.25rem;
}

.sidebar-nav {
    padding: 1.25rem 0.75rem;
    flex: 1;
}

.sidebar-nav .nav-link {
    color: rgba(232, 224, 212, 0.55);
    padding: 0.7rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.2rem;
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all var(--transition);
    text-decoration: none;
}

.sidebar-nav .nav-link:hover {
    color: #f5f0e8;
    background: rgba(201, 169, 98, 0.1);
}

.sidebar-nav .nav-link.active {
    color: var(--ink-dark);
    background: linear-gradient(135deg, var(--bronze-light) 0%, var(--bronze) 100%);
    box-shadow: 0 2px 8px rgba(201, 169, 98, 0.25);
}

.sidebar-nav .nav-link i {
    font-size: 1.05rem;
    width: 1.25rem;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(201, 169, 98, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    min-width: 0;
    flex: 1;
}

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bronze) 0%, var(--bronze-dark) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.sidebar-user-name {
    font-size: 0.825rem;
    font-weight: 600;
    color: #e8e0d4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-logout-btn {
    color: rgba(232, 224, 212, 0.45);
    padding: 0.25rem;
    border: none;
    background: none;
    line-height: 1;
    transition: color var(--transition);
    flex-shrink: 0;
}

.sidebar-logout-btn:hover {
    color: var(--bronze-light);
}

/* Sidebar overlay (mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(26, 24, 20, 0.5);
    z-index: 1035;
    backdrop-filter: blur(2px);
}

.sidebar-overlay.show {
    display: block;
}

/* --------------------------------------------------------------------------
   Top Header (authenticated)
   -------------------------------------------------------------------------- */

.content-header {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--paper-border);
    padding: 0 2rem;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    position: sticky;
    top: 0;
    z-index: 1020;
}

.header-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--ink-subtle);
    font-size: 0.825rem;
}

.header-date i {
    color: var(--bronze);
}

.member-badge {
    background: var(--paper-card-solid);
    border: 1px solid var(--paper-border);
    color: var(--ink-muted);
    padding: 0.4rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.member-badge i {
    color: var(--success);
}

.sidebar-toggle-btn {
    border-color: var(--paper-border-strong);
    color: var(--ink-muted);
    border-radius: var(--radius-sm);
    padding: 0.375rem 0.625rem;
}

.sidebar-toggle-btn:hover {
    background: var(--gold-glow);
    border-color: var(--bronze-light);
    color: var(--ink-dark);
}

/* --------------------------------------------------------------------------
   Public Navbar
   -------------------------------------------------------------------------- */

.navbar-custom {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--paper-border);
    padding: 0.75rem 0;
}

.navbar-custom .navbar-brand {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-weight: 700;
    font-size: 1.35rem;
    color: var(--ink-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 0.02em;
}

.navbar-custom .navbar-brand i {
    color: var(--bronze);
}

.navbar-custom .nav-link-auth {
    color: var(--ink-muted);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition);
}

.navbar-custom .nav-link-auth:hover {
    color: var(--bronze-dark);
}

/* --------------------------------------------------------------------------
   Shared Components
   -------------------------------------------------------------------------- */

.card-custom {
    background: var(--paper-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--paper-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    transition: box-shadow var(--transition);
}

.card-custom:hover {
    box-shadow: var(--shadow-md);
}

.card-custom .card-header {
    background: transparent;
    border-bottom: 1px solid var(--paper-border);
    padding: 1.125rem 1.5rem;
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--ink-dark);
}

.card-custom .card-header .card-header-link {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--bronze);
    text-decoration: none;
    transition: color var(--transition);
}

.card-custom .card-header .card-header-link:hover {
    color: var(--bronze-dark);
}

/* Buttons */
.btn-primary-custom {
    background: linear-gradient(135deg, var(--bronze-light) 0%, var(--bronze) 100%);
    border: 1px solid var(--bronze);
    color: var(--ink-dark);
    border-radius: var(--radius-sm);
    padding: 0.55rem 1.25rem;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition);
    box-shadow: 0 2px 8px rgba(166, 124, 82, 0.2);
}

.btn-primary-custom:hover,
.btn-primary-custom:focus {
    background: linear-gradient(135deg, var(--bronze) 0%, var(--bronze-dark) 100%);
    border-color: var(--bronze-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(166, 124, 82, 0.35);
}

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

.btn-outline-bronze {
    border: 1px solid var(--paper-border-strong);
    color: var(--ink-muted);
    background: transparent;
    border-radius: var(--radius-sm);
    padding: 0.55rem 1.25rem;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition);
}

.btn-outline-bronze:hover {
    background: var(--gold-glow);
    border-color: var(--bronze-light);
    color: var(--ink-dark);
}

/* Forms */
.form-control-custom {
    border-radius: var(--radius-sm);
    border: 1px solid var(--paper-border-strong);
    padding: 0.625rem 0.875rem;
    font-size: 0.925rem;
    background: var(--paper-card-solid);
    color: var(--ink-dark);
    transition: all var(--transition);
}

.form-control-custom:focus {
    border-color: var(--bronze-light);
    box-shadow: 0 0 0 3px var(--gold-glow);
    outline: none;
    background: #fff;
}

.form-control-custom.is-invalid {
    border-color: var(--danger);
}

.form-label-custom {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--ink-dark);
    margin-bottom: 0.375rem;
}

.input-group-text-custom {
    background: var(--paper-light);
    border: 1px solid var(--paper-border-strong);
    color: var(--ink-subtle);
}

/* Badges */
.badge-custom {
    padding: 0.3em 0.65em;
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: 6px;
    letter-spacing: 0.02em;
}

.badge-sent {
    background: var(--success-bg);
    color: var(--success);
}

.badge-failed {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge-pending {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-opens {
    background: rgba(166, 124, 82, 0.12);
    color: var(--bronze-dark);
}

/* Empty states */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--ink-subtle);
}

.empty-state-icon {
    font-size: 2.5rem;
    color: rgba(166, 124, 82, 0.35);
    display: block;
    margin-bottom: 1rem;
}

.empty-state p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* Links */
.link-hover-bronze {
    color: var(--ink-dark);
    text-decoration: none;
    transition: color var(--transition);
}

.link-hover-bronze:hover {
    color: var(--bronze);
}

/* Alerts */
.alert-custom {
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font-size: 0.9rem;
}

/* Fade-in animation */
.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Utility widths */
.max-w-narrow { max-width: 36rem; margin-left: auto; margin-right: auto; }
.max-w-medium { max-width: 42rem; margin-left: auto; margin-right: auto; }

/* Responsive */
@media (max-width: 991.98px) {
    .sidebar-wrapper {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        transform: translateX(-100%);
    }

    .sidebar-wrapper.show {
        transform: translateX(0);
    }

    .content-header {
        padding: 0 1rem;
    }

    .content-body {
        padding: 1.25rem 1rem 2rem;
    }
}

@media (max-width: 575.98px) {
    .page-header {
        flex-direction: column;
        align-items: stretch;
    }

    .page-header-actions {
        width: 100%;
    }

    .page-header-actions .btn {
        flex: 1;
        justify-content: center;
    }
}