/* ==========================================================================
   BINOM 360 - UNIFIED COMMON APPLICATION STYLES (app-common.css)
   Shared across /app directory and all /app/{slug}/spect/{lang} subpages.
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: #ffffff;
    color: var(--ink-main, #0f172a);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ==========================================================================
   UNIFIED HEADER NAVIGATION (app-nav)
   Transparent over Hero -> Frosted Glass On Scroll
   ========================================================================== */
.app-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    color: #ffffff;
}

.app-nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-soft, #e2e8f0);
    color: var(--ink-main, #0f172a);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    padding: 12px 32px;
}

.app-nav-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-logo img {
    height: 34px;
    width: auto;
}

.app-logo-text {
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: -0.5px;
    color: #ffffff;
    transition: color 0.3s;
}

.app-nav.scrolled .app-logo-text {
    color: var(--ink-main, #0f172a);
}

.app-logo-text span {
    color: var(--brand-primary, #ea580c);
}

.app-crumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.84rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.75);
    transition: color 0.3s;
}

.app-nav.scrolled .app-crumb {
    color: var(--ink-light, #64748b);
}

.app-crumb a:hover {
    color: var(--brand-primary, #ea580c);
}

.app-crumb-current {
    color: var(--brand-primary, #ea580c);
    font-weight: 700;
}

.app-nav-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

/* Language Switcher */
.app-lang-select {
    position: relative;
}

.app-lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.12);
    font-size: 0.86rem;
    font-weight: 600;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.2s;
}

.app-nav.scrolled .app-lang-btn {
    border: 1px solid var(--border-soft, #e2e8f0);
    background: #ffffff;
    color: var(--ink-main, #0f172a);
}

.app-lang-btn:hover {
    border-color: var(--brand-primary, #ea580c);
}

.app-lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    width: 220px;
    background: #ffffff;
    border: 1px solid var(--border-soft, #e2e8f0);
    border-radius: 14px;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.16);
    display: none;
    max-height: 340px;
    overflow-y: auto;
    z-index: 300;
    padding: 6px;
}

[dir="rtl"] .app-lang-dropdown {
    right: auto;
    left: 0;
}

.app-lang-opt {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 8px;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--ink-main, #0f172a);
    transition: background 0.15s;
}

.app-lang-opt:hover {
    background: var(--brand-light, #fff7ed);
    color: var(--brand-primary, #ea580c);
}

.app-lang-opt.active {
    background: var(--brand-primary, #ea580c);
    color: #ffffff !important;
}

/* Nav Action Buttons */
.app-btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.86rem;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.2s;
}

.app-nav.scrolled .app-btn-ghost {
    color: var(--ink-main, #0f172a);
    border-color: var(--border-soft, #e2e8f0);
}

.app-btn-ghost:hover {
    color: var(--brand-primary, #ea580c);
    border-color: var(--brand-primary, #ea580c);
    background: rgba(255, 255, 255, 0.1);
}

.app-nav.scrolled .app-btn-ghost:hover {
    background: var(--surface-subtle, #f8fafc);
}

.app-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    border-radius: 10px;
    background: var(--brand-primary, #ea580c);
    color: #ffffff !important;
    font-weight: 700;
    font-size: 0.86rem;
    box-shadow: 0 4px 14px rgba(var(--accent-r, 234), var(--accent-g, 88), var(--accent-b, 12), 0.35);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.app-btn-primary:hover {
    background: var(--brand-hover, #c2410c);
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(var(--accent-r, 234), var(--accent-g, 88), var(--accent-b, 12), 0.45);
}

/* ==========================================================================
   UNIFIED FOOTER (app-footer)
   ========================================================================== */
.app-footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 64px 32px 36px;
    font-size: 0.9rem;
    border-top: 1px solid #1e293b;
}

.app-footer-top {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr 2fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid #1e293b;
}

.app-footer-brand .app-logo-text {
    color: #ffffff;
    font-size: 1.4rem;
}

.app-footer-desc {
    margin: 16px 0 24px;
    line-height: 1.7;
    font-size: 0.92rem;
    color: #94a3b8;
    max-width: 380px;
}

.app-footer-badges {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.82rem;
    font-weight: 700;
    color: #cbd5e1;
}

.app-footer-badges span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.app-footer-badges span i {
    color: var(--brand-primary, #ea580c);
}

.app-footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.app-footer-col h4 {
    font-size: 0.94rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 18px;
    letter-spacing: 0.2px;
}

.app-footer-col a {
    display: block;
    color: #94a3b8;
    font-size: 0.88rem;
    margin-bottom: 12px;
    transition: color 0.2s;
}

.app-footer-col a:hover {
    color: #ffffff;
}

.app-footer-lang-col {
    grid-column: span 1;
}

.app-footer-lang-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.app-footer-lang-grid a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    margin-bottom: 0;
    padding: 4px 8px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.04);
}

.app-footer-lang-grid a:hover,
.app-footer-lang-grid a.active {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
}

.app-footer-bottom {
    max-width: 1200px;
    margin: 32px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.84rem;
    color: #64748b;
}

/* ==========================================================================
   SCROLL REVEAL UTILITY
   ========================================================================== */
.spect-reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.spect-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 900px) {
    .app-nav { padding: 12px 18px; }
    .app-crumb { display: none; }
    .app-footer-top { grid-template-columns: 1fr; gap: 36px; }
    .app-footer-links { grid-template-columns: 1fr 1fr; }
    .app-footer-lang-col { grid-column: span 2; }
    .app-footer-bottom { flex-direction: column; text-align: center; }
}