/* =========================
   LANDING PAGE
========================= */

#landingPage {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;

    background: var(--landing-bg);
    color: var(--text-primary);

    transition:
        background var(--transition-medium),
        color var(--transition-fast);

    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;

    z-index: 99997;
    padding: 20px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
}

/* =========================
   LAYOUT
========================= */

#landingSpacer {
    margin-top: 60px;
}

/* =========================
   TEXT
========================= */

#landingTitle {
    font-size: clamp(2.4rem, 6vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;

    background: linear-gradient(180deg,
            var(--text-primary),
            var(--text-secondary));

    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#landingDescription {
    font-size: 18px;
    max-width: 520px;
    line-height: 1.65;
    margin-bottom: 36px;

    color: var(--text-secondary);
}

/* =========================
   CTA
========================= */

.landing-primary-btn {
    padding: 14px 28px;
    font-size: 18px;
    border: none;
    border-radius: 10px;

    background: var(--accent-primary);
    color: #ffffff;

    cursor: pointer;

    box-shadow: var(--shadow-soft);

    transition:
        background var(--transition-fast),
        transform var(--transition-fast),
        box-shadow var(--transition-fast);
}

.landing-primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-elevated);
}

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

.landing-secondary-btn {
    padding: 12px 24px;
    font-size: 16px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.35);
    color: #ffffff;
    cursor: pointer;
    margin-bottom: 10px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.landing-secondary-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-elevated);
}

.landing-auth {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.landing-meta {
    margin-top: 6px;
}

.landing-theme-onboard {
    width: min(720px, 100%);
    margin-bottom: 28px;
}

.landing-theme-card {
    background: var(--surface-muted);
    border: 1px solid var(--surface-border);
    border-radius: 20px;
    padding: clamp(20px, 4vw, 28px);
    box-shadow: var(--shadow-soft);
    text-align: left;
}

.landing-theme-card h2 {
    margin: 0 0 6px;
    font-size: clamp(1.1rem, 3vw, 1.4rem);
    color: var(--text-primary);
}

.landing-theme-card p {
    margin: 0 0 18px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.landing-language-step {
    margin-top: 10px;
}

.landing-language-label {
    display: block;
    margin: 0 0 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
}

.landing-language-select {
    width: 100%;
    min-height: 44px;
    border-radius: 12px;
    border: 1px solid var(--surface-border);
    background: var(--surface-muted);
    color: var(--text-primary);
    padding: 0 12px;
    font-size: 0.95rem;
}

.landing-language-note {
    margin: 10px 0 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.45;
}

.landing-theme-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 14px;
    margin-top: 18px;
}

.landing-theme-actions.language-step {
    justify-content: flex-start;
}

.landing-theme-actions.language-step #landingThemeBack {
    margin-right: auto;
}

.landing-theme-actions .landing-link-btn {
    font-size: 0.95rem;
}

.landing-theme-card .theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 14px;
    margin-top: 8px;
}

.landing-theme-card .theme-card {
    background: var(--surface-muted);
    border: 2px solid transparent;
    border-radius: 16px;
    padding: 12px;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    position: relative;
}

.landing-theme-card .theme-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
}

.landing-theme-card .theme-card.active {
    border-color: var(--accent-primary);
}

.landing-theme-card .theme-preview {
    height: 72px;
    border-radius: 12px;
}

.landing-theme-card .theme-preview.white-gradient {
    background: linear-gradient(135deg, #ffffff, #f1f5f9);
}

.landing-theme-card .theme-preview.navy-gradient {
    background: linear-gradient(135deg, #0f172a, #1e293b);
}

.landing-theme-card .theme-preview.gray-gradient {
    background: linear-gradient(135deg, #e5e7eb, #9ca3af);
}

.landing-theme-card .theme-preview.military-green {
    background: linear-gradient(135deg, #0b1a12, #223322);
}

.landing-theme-card .theme-preview.purple-pink {
    background: linear-gradient(135deg, #2b1235, #f472b6);
}

.theme-preview.sunset-orange {
    background: linear-gradient(135deg, #2b1410, #fb923c);
}

.theme-preview.teal-ocean {
    background: linear-gradient(135deg, #0b2c2c, #2dd4bf);
}

.theme-preview.crimson-night {
    background: linear-gradient(135deg, #1f0f12, #ef4444);
}

.theme-preview.royal-indigo {
    background: linear-gradient(135deg, #141a33, #818cf8);
}

.theme-preview.emerald-glass {
    background: linear-gradient(135deg, #0c201b, #10b981);
}

.theme-preview.midnight-core {
    background: linear-gradient(135deg, #020617, #1f2937);
}

.landing-theme-card .theme-name {
    text-align: center;
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 8px;
    color: var(--text-primary);
}

.landing-meta {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.landing-link-btn {
    background: none;
    border: none;
    color: #93c5fd;
    cursor: pointer;
    padding: 0;
    font-size: 14px;
}

.landing-accent-link {
    color: var(--accent-primary);
    font-weight: 600;
}

@media (max-width: 900px) {
    #landingPage {
        justify-content: flex-start;
        align-items: stretch;
        text-align: left;
        padding: 14px 14px calc(env(safe-area-inset-bottom, 0px) + 18px);
    }

    #landingSpacer {
        margin-top: calc(var(--toolbar-height, 60px) + env(safe-area-inset-top, 0px));
    }

    .landing-theme-onboard,
    .landing-auth {
        width: 100%;
    }
}