/* ═══════════════════════════════════════════════════════════
   style_common.css  —  shared across all Cloud-Sliver pages
   Load this file first, then the page-specific CSS
   ═══════════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ── */
:root {
    --black:   #0b0f14;
    --white:   #dce8f0;
    --accent:  #3b9eff;
    --accent2: #8bafc4;
    --accent3: #00c8d4;
    --mid:     #131b25;
    --mid2:    #0d1520;
    --muted:   #4a7a94;
    --border:  rgba(59,158,255,0.12);
    --border2: rgba(59,158,255,0.06);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    background: var(--black);
    color: var(--white);
    font-family: 'Montserrat', sans-serif;
    font-size: 17px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Noise-texture overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    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)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
    opacity: 0.35;
}

/* ── NAV ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 3rem;
    background: rgba(11,15,20,0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-logo img {
    width: 32px;
    height: 32px;
    display: block;
}

.nav-logo-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.05rem;
    font-weight: 300;
    letter-spacing: 0.03em;
    color: var(--white);
    line-height: 1;
}

.nav-logo-text strong {
    font-weight: 800;
    letter-spacing: -0.01em;
    background: linear-gradient(135deg, var(--white) 0%, var(--accent2) 60%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: color 0.2s;
}

.nav-links a:hover  { color: var(--white); }
.nav-links a.active { color: var(--accent); }

/* ── NAV ACTIONS ── */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ── THEME TOGGLE ── */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    padding: 0;
    background: none;
    border: 1px solid var(--border);
    border-radius: 2px;
    cursor: pointer;
    color: var(--muted);
    flex-shrink: 0;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.theme-toggle:hover {
    color: var(--white);
    border-color: rgba(59,158,255,0.4);
    background: rgba(59,158,255,0.05);
}

.theme-toggle svg { display: block; pointer-events: none; }
.icon-moon { display: none; }
.icon-sun  { display: block; }

/* ── HAMBURGER ── */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 200;
}

.nav-toggle span {
    display: block;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.25s;
    transform-origin: center;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── MOBILE DRAWER ── */
.nav-drawer {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    padding: 5rem 1.5rem 2rem;
    background: rgba(11,15,20,0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 150;
    flex-direction: column;
    gap: 0;
    animation: menuSlide 0.2s ease forwards;
}

.nav-drawer.open { display: flex; }

.nav-drawer a {
    color: var(--white);
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border2);
    transition: color 0.2s;
}

.nav-drawer a:last-child { border-bottom: none; }
.nav-drawer a:hover, .nav-drawer a.active { color: var(--accent); }

/* ── HERO BASE ── */
.hero {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 10rem 3rem 5rem;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 1.25rem;
    opacity: 0;
    animation: fadeUp 0.5s 0.1s forwards;
}

.hero h1 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    opacity: 0;
    animation: fadeUp 0.6s 0.2s forwards;
}

.hero h1 em {
    font-style: normal;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent3) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    margin-top: 1.5rem;
    font-size: 1.1rem;
    color: var(--accent2);
    font-weight: 300;
    line-height: 1.75;
    opacity: 0;
    animation: fadeUp 0.6s 0.35s forwards;
}

/* ── BUTTONS ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    border-radius: 2px;
    cursor: pointer;
    text-decoration: none;
    border: none;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: var(--black);
}

.btn-primary:hover {
    background: #5caaff;
    transform: translateY(-1px);
    box-shadow: 0 0 24px rgba(59,158,255,0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--white);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    border-color: rgba(59,158,255,0.4);
    background: rgba(59,158,255,0.05);
    color: var(--accent);
}

/* ── SECTION LABEL ── */
.section-label {
    font-size: 0.68rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

/* ── SECTION TITLE ── */
.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
    max-width: 22ch;
}

/* ── SECTION BODY ── */
.section-body {
    margin-top: 1.25rem;
    color: var(--accent2);
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.8;
    max-width: 52ch;
}

/* ── FOOTER ── */
footer {
    padding: 2rem 3rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--muted);
}

footer a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}

footer a:hover { color: var(--accent); }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

/* ── TABLET (≤ 1024px) ── */
@media (max-width: 1024px) {
    nav { padding: 1rem 2rem; }
    .hero { padding: 8rem 2rem 4rem; }
    footer { padding: 1.75rem 2rem; }
}

/* ── MOBILE (≤ 767px) ── */
@media (max-width: 767px) {
    nav { padding: 0.9rem 1.25rem; }
    .nav-links  { display: none; }
    .nav-toggle { display: flex; }

    .hero {
        min-height: auto;
        padding: 7rem 1.25rem 3.5rem;
    }

    .hero-sub { font-size: 0.97rem; max-width: 100%; }

    footer {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
        padding: 1.5rem 1.25rem;
    }
}