/* TrueNext - Apple.com-inspired look */

:root {
    --tn-black: #1d1d1f;
    --tn-gray-bg: #f5f5f7;
    --tn-white: #ffffff;
    --tn-blue: #0071e3;
    --tn-blue-dark: #0066cc;
    --tn-text-secondary: #86868b;
    --tn-nav-height: 44px;
    --tn-font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
        Roboto, Helvetica, Arial, sans-serif;
}

* {
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--tn-font);
    color: var(--tn-black);
    background-color: var(--tn-white);
}

a {
    color: inherit;
}

/* ===== Nav ===== */
.tn-nav {
    height: var(--tn-nav-height);
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1030;
}

.tn-nav .container {
    height: 100%;
}

.tn-nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--tn-white);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: -0.01em;
}

.tn-nav-brand i {
    font-size: 16px;
}

.tn-env-badge {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #1d1d1f;
    background-color: #ffb340;
    padding: 2px 7px;
    border-radius: 100px;
    line-height: 1.4;
}

.tn-nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-size: 12px;
    text-decoration: none;
    transition: color 0.2s ease;
}

.tn-nav-link:hover {
    color: var(--tn-white);
}

.tn-nav-icon-btn {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    padding: 4px;
    line-height: 1;
    transition: color 0.2s ease;
}

.tn-nav-icon-btn:hover {
    color: var(--tn-white);
}

.tn-btn-nav {
    background: rgba(255, 255, 255, 0.12);
    border: none;
    color: var(--tn-white);
    font-size: 13px;
    font-weight: 500;
    padding: 6px 16px;
    border-radius: 980px;
    transition: background-color 0.2s ease;
}

.tn-btn-nav:hover,
.tn-btn-nav:focus {
    background: rgba(255, 255, 255, 0.22);
    color: var(--tn-white);
}

/* ===== Hero ===== */
.tn-hero {
    padding: calc(var(--tn-nav-height) + 140px) 0 120px;
    background: linear-gradient(180deg, var(--tn-white) 0%, #fbfbfd 100%);
}

.tn-eyebrow {
    font-size: 19px;
    font-weight: 600;
    color: var(--tn-text-secondary);
    margin-bottom: 8px;
}

.tn-hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.05;
    margin-bottom: 20px;
    color: var(--tn-black);
}

.tn-hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    line-height: 1.5;
    color: var(--tn-text-secondary);
    max-width: 640px;
    margin: 0 auto;
}

/* ===== Buttons ===== */
.tn-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-size: 17px;
    font-weight: 400;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tn-btn-primary {
    background-color: var(--tn-blue);
    color: var(--tn-white);
    padding: 12px 22px;
    border-radius: 980px;
}

.tn-btn-primary:hover {
    background-color: var(--tn-blue-dark);
    color: var(--tn-white);
}

.tn-btn-link {
    color: var(--tn-blue);
    padding: 12px 4px;
}

.tn-btn-link:hover {
    color: var(--tn-blue-dark);
    text-decoration: underline;
}

/* ===== Features ===== */
.tn-features {
    background-color: var(--tn-gray-bg);
    padding: 100px 0;
}

.tn-feature-card {
    background-color: var(--tn-white);
    border-radius: 18px;
    padding: 40px 32px;
    height: 100%;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    opacity: 0;
    transform: translateY(16px);
    animation: tn-fade-up 0.6s ease forwards;
}

.tn-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.tn-feature-icon {
    font-size: 32px;
    color: var(--tn-blue);
    margin-bottom: 16px;
    display: inline-block;
}

.tn-feature-title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 10px;
    color: var(--tn-black);
}

.tn-feature-text {
    font-size: 15px;
    line-height: 1.6;
    color: var(--tn-text-secondary);
    margin-bottom: 0;
}

@keyframes tn-fade-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.col-md-4:nth-child(2) .tn-feature-card {
    animation-delay: 0.1s;
}

.col-md-4:nth-child(3) .tn-feature-card {
    animation-delay: 0.2s;
}

/* ===== Footer ===== */
.tn-footer {
    background-color: var(--tn-gray-bg);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding: 24px 0;
}

.tn-footer-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding-bottom: 16px;
    margin-bottom: 16px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.tn-footer-text {
    font-size: 12px;
    color: var(--tn-black);
    font-weight: 600;
}

.tn-footer-link {
    font-size: 12px;
    color: var(--tn-text-secondary);
    text-decoration: none;
}

.tn-footer-link:hover {
    color: var(--tn-black);
    text-decoration: underline;
}

.tn-footer-bottom {
    font-size: 12px;
    color: var(--tn-text-secondary);
}

/* ===== Dashboard (logged-in home page) ===== */
.tn-dashboard {
    padding: calc(var(--tn-nav-height) + 48px) 0 64px;
}

.tn-dashboard-title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--tn-black);
    margin-bottom: 20px;
}

.tn-app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
}

.tn-app-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background-color: var(--tn-white);
    border-radius: 16px;
    padding: 20px 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.tn-app-card:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.tn-app-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    object-fit: cover;
    margin-bottom: 10px;
}

.tn-app-icon-sm {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    object-fit: cover;
    vertical-align: middle;
}

.tn-app-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--tn-black);
}

/* ===== Initial loader (index.html, hidden/removed by Apps.onAuthChange once the
   logged-in/out state is known - see the comment above #initial-loader) ===== */
.tn-initial-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--tn-nav-height));
    padding-top: var(--tn-nav-height);
}

.tn-initial-loader .spinner-border {
    color: var(--tn-black);
    opacity: 0.4;
}

/* ===== Global spinner (static/js/lib/spinner.js) ===== */
.tn-spinner {
    position: fixed;
    top: calc(var(--tn-nav-height) + 12px);
    right: 16px;
    z-index: 1040;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: rgba(29, 29, 31, 0.85);
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    pointer-events: none;
}

.tn-spinner .spinner-border {
    color: var(--tn-white);
    width: 16px;
    height: 16px;
    border-width: 2px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .tn-hero {
        padding: calc(var(--tn-nav-height) + 80px) 0 72px;
    }

    .tn-features {
        padding: 64px 0;
    }
}