/* ==========================================================================
   CSS VARIABLES & OCEAN CORAL DESIGN (SALUZAB.ONE)
   ========================================================================== */
:root {
    --c-navy: #0f172a; /* Slate 900 - Deep Ocean */
    --c-navy-light: #1e293b; /* Slate 800 */
    --c-coral: #fb7185; /* Rose 400 */
    --c-coral-dark: #e11d48; /* Rose 600 */
    --c-cotton: #f8fafc; /* Slate 50 */
    --c-white: #ffffff;
    --c-text: #475569; /* Slate 600 */
    --c-line: #cbd5e1; /* Slate 300 */

    --pad-x: clamp(15px, 5vw, 30px);
    --pad-y: clamp(80px, 10vw, 130px);
    
    --rad-sm: 6px;
    --rad-md: 14px;
    --rad-lg: 24px;
    
    --shadow-polaroid: 5px 15px 40px rgba(15, 23, 42, 0.2);
    --shadow-soft: 0 10px 25px rgba(251, 113, 133, 0.1);
    --trans: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

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

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--c-cotton);
    color: var(--c-text);
    line-height: 1.65;
    overflow-x: hidden;
}

h1, h2, h3, h4 { color: var(--c-navy); font-weight: 900; line-height: 1.1; margin-bottom: 1rem; letter-spacing: -0.5px; }
h1 { font-size: clamp(2.8rem, 7vw, 5.5rem); letter-spacing: -2px; }
h2 { font-size: clamp(2.2rem, 5vw, 4rem); letter-spacing: -1px; }
h3 { font-size: clamp(1.4rem, 2.5vw, 1.8rem); color: var(--c-coral-dark); }
p { font-size: clamp(1.05rem, 1.5vw, 1.15rem); margin-bottom: 1.5rem; }

a { text-decoration: none; color: inherit; transition: var(--trans); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--rad-md); }
ul { list-style: none; }

.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--pad-x); }
.sec-p { padding: var(--pad-y) 0; }
.txt-c { text-align: center; }

/* ==========================================================================
   HEADER (STRICT 10PX MOBILE PADDING)
   ========================================================================== */
.site-hdr { background: var(--c-white); border-bottom: 1px solid var(--c-line); position: sticky; top: 0; z-index: 1000; box-shadow: 0 4px 20px rgba(0,0,0,0.03); }

.mob-nav-shield {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 10px; /* СТРОГО 10PX НА МОБИЛЬНОМ */
    max-width: 1200px; margin: 0 auto; position: relative;
}

@media (min-width: 768px) { .mob-nav-shield { padding: 20px var(--pad-x); } }

.brand { font-size: 2.2rem; font-weight: 900; color: var(--c-navy); letter-spacing: -1px; }
.brand span { color: var(--c-coral); }

.burger { display: flex; flex-direction: column; gap: 6px; cursor: pointer; padding: 5px; }
.burger span { width: 32px; height: 3px; background: var(--c-navy); border-radius: 2px; transition: var(--trans); }
#menu-tog { display: none; }

.desk-nav { display: none; }
.desk-nav ul { display: flex; gap: 40px; align-items: center; }
.desk-nav a { font-weight: 700; color: var(--c-text); font-size: 1.05rem; }
.desk-nav a:hover, .desk-nav a.active { color: var(--c-coral-dark); }

.mobile-nav {
    display: none; position: absolute; top: 100%; left: 0; width: 100%;
    background: var(--c-navy); padding: 15px 20px 25px; border-top: 3px solid var(--c-coral); box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}
.mobile-nav a { display: block; font-weight: 700; color: var(--c-white); padding: 15px 0; border-bottom: 1px solid var(--c-navy-light); }
.mobile-nav li:last-child a { border-bottom: none; }
#menu-tog:checked ~ .mobile-nav { display: block; }

@media (min-width: 992px) {
    .burger { display: none; }
    .desk-nav { display: block; }
    .mobile-nav { display: none !important; }
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 18px 45px; font-weight: 800; font-size: 1.1rem; border-radius: 50px; cursor: pointer; transition: var(--trans); border: 2px solid transparent; text-align: center; }
.btn-c { background: var(--c-coral); color: var(--c-white); box-shadow: var(--shadow-soft); }
.btn-c:hover { background: var(--c-navy); color: var(--c-white); transform: translateY(-3px); }
.btn-n { background: transparent; border-color: var(--c-navy); color: var(--c-navy); }
.btn-n:hover { background: var(--c-navy); color: var(--c-white); }

/* ==========================================================================
   GENERAL GRIDS
   ========================================================================== */
.g-2 { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
@media (min-width: 992px) { .g-2 { grid-template-columns: 1fr 1fr; gap: 60px; } }

.g-3 { display: grid; grid-template-columns: 1fr; gap: 30px; }
@media (min-width: 768px) { .g-3 { grid-template-columns: repeat(3, 1fr); } }

/* ==========================================================================
   INDEX: POLAROID HERO & JOINT FRICTION SLIDER
   ========================================================================== */
/* Polaroid Hero */
.polaroid-img { background: var(--c-white); padding: 15px 15px 60px 15px; box-shadow: var(--shadow-polaroid); transform: rotate(3deg); transition: var(--trans); border-radius: 2px; }
.polaroid-img:hover { transform: rotate(0deg) scale(1.02); }
.polaroid-img img { border-radius: 2px; }

/* Offset Checkerboard (Features) */
.offset-checker { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { 
    .offset-checker { grid-template-columns: repeat(2, 1fr); }
    .chk-crd:nth-child(even) { transform: translateY(40px); }
}
.chk-crd { background: var(--c-white); padding: 40px; border-radius: var(--rad-lg); box-shadow: var(--shadow-soft); border: 1px solid var(--c-line); }
.c-ico { font-size: 3rem; margin-bottom: 15px; display: block; color: var(--c-coral); }

/* Joint Friction Slider (UI Visual) */
.friction-ui { background: var(--c-white); padding: 50px; border-radius: var(--rad-lg); box-shadow: var(--shadow-soft); border: 2px solid var(--c-line); max-width: 800px; margin: 0 auto; }
.f-track { width: 100%; height: 12px; border-radius: 6px; background: linear-gradient(to right, #ef4444, #eab308, #10b981); position: relative; margin: 40px 0 60px; }
.f-handle { position: absolute; top: 50%; transform: translate(-50%, -50%); width: 30px; height: 30px; background: var(--c-white); border: 4px solid var(--c-navy); border-radius: 50%; left: 80%; box-shadow: 0 0 15px rgba(0,0,0,0.2); }
.f-labels { display: flex; justify-content: space-between; font-weight: 800; color: var(--c-navy); font-size: 0.9rem; text-transform: uppercase; }
.fl-box { text-align: center; width: 30%; }
.fl-box span { display: block; font-size: 0.8rem; font-weight: 400; color: var(--c-text); margin-top: 5px; text-transform: none; }

/* ==========================================================================
   PROGRAM: EXPANDING FLEX GALLERY & TERMINAL FAQ
   ========================================================================== */
/* Expanding Flex Gallery */
.flex-gallery { display: flex; flex-direction: column; gap: 20px; min-height: 500px; }
.fg-item { background: var(--c-white); border-radius: var(--rad-md); padding: 40px; box-shadow: var(--shadow-soft); border-left: 6px solid var(--c-coral); display: flex; flex-direction: column; justify-content: center; }
@media (min-width: 992px) {
    .flex-gallery { flex-direction: row; gap: 10px; }
    .fg-item { flex: 1; transition: flex 0.5s cubic-bezier(0.25, 1, 0.5, 1); cursor: pointer; padding: 40px 20px; align-items: center; text-align: center; }
    .fg-item:hover { flex: 3; background: var(--c-navy); color: var(--c-white); border-color: var(--c-coral); }
    .fg-item h3 { transition: var(--trans); }
    .fg-item:hover h3 { color: var(--c-coral); }
    .fg-item p { opacity: 0; transition: opacity 0.3s; height: 0; overflow: hidden; }
    .fg-item:hover p { opacity: 1; height: auto; margin-top: 20px; }
}

/* Terminal FAQ */
.terminal-faq { background: var(--c-navy); color: #a5b4fc; padding: 40px; border-radius: var(--rad-md); font-family: 'Courier New', monospace; box-shadow: var(--shadow-polaroid); max-width: 900px; margin: 0 auto; border-top: 30px solid var(--c-navy-light); position: relative; }
.terminal-faq::before { content: '•••'; position: absolute; top: -25px; left: 15px; color: var(--c-coral); font-size: 2rem; line-height: 1; letter-spacing: 2px; }
.t-row { margin-bottom: 30px; border-bottom: 1px dashed #334155; padding-bottom: 20px; }
.t-row:last-child { margin-bottom: 0; border-bottom: none; padding-bottom: 0; }
.t-q { color: var(--c-coral); font-weight: bold; font-size: 1.1rem; margin-bottom: 10px; }
.t-q::before { content: '> user: '; color: #94a3b8; }
.t-a::before { content: '> sys: '; color: #10b981; }

/* ==========================================================================
   MISSION: PARALLAX PANELS & STAIRWAY GRID
   ========================================================================== */
/* Typography Panels */
.typo-panel { background: var(--c-white); padding: 60px; border-radius: var(--rad-lg); box-shadow: var(--shadow-soft); max-width: 800px; margin: -50px auto 50px; position: relative; z-index: 10; border: 1px solid var(--c-line); }

/* Stairway Grid */
.stairway { display: grid; grid-template-columns: 1fr; gap: 20px; max-width: 1000px; margin: 0 auto; padding-top: 40px; padding-bottom: 80px; }
@media (min-width: 768px) {
    .stairway { grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .stair-2 { transform: translateY(40px); }
    .stair-3 { transform: translateY(80px); }
}
.stair-item { background: var(--c-navy); color: var(--c-white); padding: 40px 30px; border-radius: var(--rad-md); box-shadow: var(--shadow-polaroid); border-bottom: 6px solid var(--c-coral); transition: var(--trans); }
.stair-item:hover { transform: translateY(-10px); }
.stair-item h3 { color: var(--c-white); font-size: 1.6rem; }
.stair-item p { color: #cbd5e1; font-size: 0.95rem; margin: 0; }

/* ==========================================================================
   FORM (4 FIELDS)
   ========================================================================== */
.frm-ui { background: var(--c-white); padding: clamp(30px, 5vw, 60px); border-radius: var(--rad-lg); box-shadow: var(--shadow-soft); max-width: 700px; margin: 0 auto; border: 1px solid var(--c-line); }
.f-row { margin-bottom: 25px; }
.f-row label { display: block; font-weight: 800; color: var(--c-navy); margin-bottom: 8px; font-size: 0.95rem; }
.f-row input, .f-row textarea { width: 100%; padding: 16px; border: 2px solid var(--c-line); border-radius: var(--rad-sm); font-family: inherit; font-size: 1rem; background: var(--c-cotton); transition: var(--trans); }
.f-row input:focus, .f-row textarea:focus { outline: none; border-color: var(--c-coral); background: var(--c-white); }
.f-row textarea { min-height: 140px; resize: vertical; }

/* ==========================================================================
   FOOTER (STRICT DATES)
   ========================================================================== */
.site-ftr { background: var(--c-navy); color: #cbd5e1; padding: 80px 0 30px; margin-top: 80px; }
.ftr-g { display: grid; grid-template-columns: 1fr; gap: 40px; margin-bottom: 50px; }
@media (min-width: 768px) { .ftr-g { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); } }
.f-logo { font-size: 2.2rem; font-weight: 900; color: #fff; margin-bottom: 15px; display: block; letter-spacing: -1px; }
.f-logo span { color: var(--c-coral); }
.f-desc { font-size: 0.95rem; line-height: 1.7; }
.f-h { color: #fff; font-size: 1.25rem; font-weight: 800; margin-bottom: 20px; }
.f-links li { margin-bottom: 12px; }
.f-links a { font-weight: 600; transition: var(--trans); }
.f-links a:hover { color: var(--c-coral); padding-left: 5px; }
.f-copy { border-top: 1px solid #1e293b; padding-top: 30px; text-align: center; font-size: 0.95rem; color: #94a3b8; }

/* ==========================================================================
   COOKIE BANNER (2 BUTTONS, LINK IN TEXT)
   ========================================================================== */
#ck-bnnr { position: fixed; bottom: 20px; left: 20px; right: 20px; background: var(--c-white); padding: 25px 30px; border-radius: var(--rad-lg); z-index: 9999; display: flex; flex-direction: column; gap: 15px; transform: translateY(150%); transition: 0.5s cubic-bezier(0.25, 1, 0.5, 1); box-shadow: var(--shadow-polaroid); border: 2px solid var(--c-coral); max-width: 900px; margin: 0 auto; }
#ck-bnnr.show { transform: translateY(0); }
.ck-txt p { margin: 0; font-size: 0.95rem; line-height: 1.6; color: var(--c-text); }
.ck-txt a { color: var(--c-coral-dark); font-weight: 800; text-decoration: underline; }
.ck-acts { display: flex; gap: 10px; }
.b-ck { padding: 12px 25px; border: none; border-radius: 50px; font-weight: 800; cursor: pointer; flex: 1; transition: var(--trans); font-size: 0.95rem; text-align: center; font-family: inherit; }
.b-ck.y { background: var(--c-coral); color: #fff; }
.b-ck.y:hover { background: var(--c-navy); }
.b-ck.n { background: transparent; border: 2px solid var(--c-navy); color: var(--c-navy); }
.b-ck.n:hover { background: var(--c-navy); color: #fff; }
@media (min-width: 768px) { #ck-bnnr { flex-direction: row; align-items: center; justify-content: space-between; } .ck-acts { width: auto; flex-shrink: 0; } .b-ck { flex: none; } }