/* ══════════════════════════════════════════════
   Shared Styles — rconde.tech
   ══════════════════════════════════════════════ */

/* ── Variables ── */
:root {
    --c-bg: #0A0A0A;
    --c-surface: #111111;
    --c-surface-elevated: #1A1A1A;
    --c-border: #222222;
    --c-border-light: #2A2A2A;
    --c-text: #E8E4DE;
    --c-text-secondary: #8A8680;
    --c-text-muted: #5A5854;
    --c-accent: #D4A853;
    --c-accent-dim: #B8923F;
    --c-accent-glow: rgba(212, 168, 83, 0.12);
    --c-white: #FAFAF8;
    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body: 'Instrument Sans', -apple-system, sans-serif;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

/* ── Base ── */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
    font-size: 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--c-border-light) transparent;
}

body {
    font-family: var(--font-body);
    background: var(--c-bg);
    color: var(--c-text);
    line-height: 1.7;
    overflow-x: hidden;
    overflow-wrap: break-word;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--c-accent);
    color: var(--c-bg);
}

a {
    color: var(--c-accent);
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover { color: var(--c-white); }

/* ── Noise Overlay ── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    pointer-events: none;
    z-index: 9999;
}

/* ── Navigation ── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 2.5rem;
    padding-top: max(1.25rem, env(safe-area-inset-top));
    padding-left: max(2.5rem, env(safe-area-inset-left));
    padding-right: max(2.5rem, env(safe-area-inset-right));
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.4s ease;
}
.nav.scrolled { border-bottom-color: var(--c-border); }
.nav--bordered { border-bottom-color: var(--c-border); }

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--c-white);
    letter-spacing: 0.02em;
}
.nav-logo span { color: var(--c-accent); }

.nav-links {
    display: flex;
    gap: 1.8rem;
    margin-left: auto;
    list-style: none;
    flex-wrap: nowrap;
}
.nav-links a {
    color: var(--c-text-secondary);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: color 0.3s ease;
    white-space: nowrap;
}
.nav-links a:hover { color: var(--c-white); }
.nav-link-active { color: var(--c-white) !important; }

.nav-cta {
    background: transparent;
    border: 1px solid var(--c-accent-dim);
    color: var(--c-accent) !important;
    padding: 0.55rem 1.4rem;
    border-radius: 2px;
    font-size: 0.8rem !important;
    font-weight: 600 !important;
    letter-spacing: 0.08em !important;
    transition: all 0.3s ease !important;
    white-space: nowrap;
}
.nav-cta:hover {
    background: var(--c-accent) !important;
    color: var(--c-bg) !important;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--c-text);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* ── Language Switcher ── */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.lang-switcher button,
.lang-switcher a {
    background: none;
    border: 1px solid transparent;
    color: var(--c-text-muted);
    font-family: var(--font-body);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.3rem 0.55rem;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.lang-switcher button:hover,
.lang-switcher a:hover { color: var(--c-text); }
.lang-switcher button.active,
.lang-switcher a.active {
    color: var(--c-accent);
    border-color: var(--c-accent-dim);
}
.lang-switcher span {
    color: var(--c-text-muted);
    font-size: 0.7rem;
    opacity: 0.4;
}

/* ── Mobile Menu ── */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(30px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--c-white);
}
.mobile-menu a:hover { color: var(--c-accent); }

/* ── Buttons ── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 2rem;
    background: var(--c-accent);
    color: var(--c-bg);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}
.btn-primary:hover {
    background: var(--c-white);
    color: var(--c-bg);
    transform: translateY(-2px);
}
.btn-primary svg { width: 16px; height: 16px; }

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 2rem;
    background: transparent;
    color: var(--c-text);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border: 1px solid var(--c-border-light);
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}
.btn-ghost:hover {
    border-color: var(--c-text-secondary);
    color: var(--c-white);
}

/* ── Section Layout ── */
.section {
    padding: 7rem 2.5rem;
    position: relative;
}
.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-accent);
    margin-bottom: 1.5rem;
}
.section-label::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--c-accent);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 3.2rem);
    font-weight: 400;
    color: var(--c-white);
    line-height: 1.2;
    margin-bottom: 1.25rem;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--c-text-secondary);
    max-width: 600px;
    line-height: 1.8;
}

/* ── Footer ── */
.footer {
    padding: 3rem 2.5rem;
    border-top: 1px solid var(--c-border);
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-copy {
    font-size: 0.82rem;
    color: var(--c-text-muted);
}
.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}
.footer-links a {
    color: var(--c-text-secondary);
    font-size: 0.82rem;
    transition: color 0.3s ease;
}
.footer-links a:hover { color: var(--c-white); }

/* ── Scroll Reveal ── */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: all 0.8s var(--ease-out);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Animations ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Page Entrance ── */
@keyframes pageEntrance {
    from { opacity: 0; }
    to { opacity: 1; }
}
body {
    animation: pageEntrance 0.4s ease-out;
}

/* ── Responsive ── */
@media (max-width: 1100px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .theme-toggle { margin-left: auto; }
}

@media (max-width: 968px) {
    .section { padding: 5rem 2.5rem; }
    .footer-inner {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    .footer-links { justify-content: center; }
}

@media (max-width: 560px) {
    .nav {
        padding: 1rem 1.25rem;
        padding-top: max(1rem, env(safe-area-inset-top));
        padding-left: max(1.25rem, env(safe-area-inset-left));
        padding-right: max(1.25rem, env(safe-area-inset-right));
    }
    .section { padding: 4rem 1.5rem; }
    .footer { padding: 3rem 1.5rem; }
    .footer-links { gap: 1.25rem; }
}

/* ── Theme Toggle ── */
.theme-toggle {
    background: none;
    border: 1px solid transparent;
    color: var(--c-text-muted);
    cursor: pointer;
    padding: 0.3rem;
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}
.theme-toggle:hover { color: var(--c-text); }
.theme-toggle svg { width: 16px; height: 16px; }

/* Show sun in dark mode, moon in light mode */
.theme-icon--moon { display: none; }
[data-theme="light"] .theme-icon--sun { display: none; }
[data-theme="light"] .theme-icon--moon { display: block; }

/* ── Light Mode ── */
[data-theme="light"] {
    --c-bg: #FAF8F5;
    --c-surface: #F0EDE8;
    --c-surface-elevated: #FFFFFF;
    --c-border: #E0DDD6;
    --c-border-light: #D4D0C8;
    --c-text: #2A2520;
    --c-text-secondary: #6B6560;
    --c-text-muted: #9A958E;
    --c-accent: #B8923F;
    --c-accent-dim: #9A7A30;
    --c-accent-glow: rgba(184, 146, 63, 0.10);
    --c-white: #1A1714;
}

[data-theme="light"] .nav {
    background: rgba(250, 248, 245, 0.85);
}

[data-theme="light"] .mobile-menu {
    background: rgba(250, 248, 245, 0.97);
}

[data-theme="light"] body::before {
    opacity: 0.015;
}

[data-theme="light"] .hero-bg::after {
    opacity: 0.5;
}

[data-theme="light"] .hero-grid-lines {
    opacity: 0.025;
}