/* === SECTIONS.CSS ===
   ПУТЬ: assets/css/sections.css
   НАЗНАЧЕНИЕ: стили всех секций лендинга MBC (header, hero, миссия, ценности, кодекс, формат, резиденты, членство, форма, футер)
   СВЯЗИ: index.php, main.css, animations.css
   РАЗМЕР: ~900 строк
*/

/* ==========================================================================
   HEADER
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 26px var(--gutter);
    mix-blend-mode: difference;
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 32px;
    z-index: 210;
}

.menu-toggle span {
    display: block;
    height: 1px;
    background: var(--text-primary);
    transition: transform 0.4s var(--ease-out-quart), opacity 0.3s;
}

.menu-toggle span:nth-child(1) { width: 100%; }
.menu-toggle span:nth-child(2) { width: 70%; margin-left: auto; }

.menu-toggle.is-open span:nth-child(1) { transform: translateY(3.5px) rotate(45deg); width: 100%; }
.menu-toggle.is-open span:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); width: 100%; margin-left: 0; }

.header-cta {
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 12px 24px;
    border: 1px solid var(--text-primary);
    color: var(--text-primary);
}

/* --- Nav overlay --- */
.nav-overlay {
    position: fixed;
    inset: 0;
    z-index: 190;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 var(--gutter);
    clip-path: circle(0% at calc(100% - 46px) 46px);
    transition: clip-path 0.7s var(--ease-out-expo);
    pointer-events: none;
}

.nav-overlay.is-open {
    clip-path: circle(150% at calc(100% - 46px) 46px);
    pointer-events: auto;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.nav-list li {
    overflow: hidden;
}

.nav-list a {
    display: inline-block;
    font-family: var(--font-display);
    font-size: clamp(38px, 7vw, 84px);
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.4s var(--ease-out-quart), transform 0.4s var(--ease-out-quart);
    transform: translateY(110%);
}

.nav-overlay.is-open .nav-list a { transform: translateY(0); }

.nav-list a:hover,
.nav-list a:focus-visible {
    color: var(--gold);
    transform: translateY(0) translateX(14px);
}

.nav-overlay-footer {
    position: absolute;
    bottom: 100px;
    left: var(--gutter);
    right: var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

.nav-overlay-links {
    display: flex;
    gap: 28px;
}

.nav-overlay-links a {
    font-family: var(--font-body);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    transition: color 0.3s var(--ease-out-quart);
}

.nav-overlay-links a:hover { color: var(--gold); }

.nav-overlay-social {
    display: flex;
    gap: 14px;
}

.nav-overlay-social a {
    color: var(--text-muted);
    display: inline-flex;
    transition: color 0.3s var(--ease-out-quart);
}

.nav-overlay-social a:hover { color: var(--gold); }

.nav-foot {
    position: absolute;
    bottom: 48px;
    left: var(--gutter);
    right: var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 0.04em;
}

.nav-foot a { color: var(--text-secondary); }
.nav-foot a:hover { color: var(--gold); }

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
    height: 100svh;
    min-height: 640px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    background: var(--bg-primary);
}

.hero-media {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.85) brightness(0.7);
}

.hero-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, oklch(10% 0.01 90 / 0.55) 0%, oklch(10% 0.01 90 / 0.25) 40%, oklch(10% 0.01 90 / 0.9) 100%),
        linear-gradient(0deg, var(--bg-primary) 0%, transparent 16%);
    mix-blend-mode: multiply;
}

.hero-media::before {
    content: '';
    position: absolute;
    inset: 0;
    background: color-mix(in oklch, var(--gold), transparent 88%);
    mix-blend-mode: color;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 0 var(--gutter) 96px;
    max-width: var(--container-max);
    margin: 0 auto;
    width: 100%;
}

.hero-eyebrow {
    color: var(--gold-bright);
    margin-bottom: 28px;
}

.hero-manifest {
    font-family: var(--font-display);
    font-size: clamp(34px, 5.6vw, 78px);
    line-height: 1.08;
    max-width: 15ch;
    color: var(--text-primary);
}

.hero-manifest em {
    font-style: italic;
    color: var(--gold);
}

.hero-foot {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-top: 44px;
    gap: 24px;
    flex-wrap: wrap;
}

.hero-sub {
    max-width: 42ch;
    color: var(--text-secondary);
    font-size: 16px;
}

.scroll-cue {
    position: absolute;
    bottom: 32px;
    left: var(--gutter);
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.scroll-cue .line {
    width: 1px;
    height: 40px;
    background: var(--gold-line);
    position: relative;
    overflow: hidden;
}

.scroll-cue .line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gold);
    animation: scrollLine 2.4s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { top: -100%; }
    50% { top: 0; }
    100% { top: 100%; }
}

/* ==========================================================================
   MISSION
   ========================================================================== */

.mission {
    padding: clamp(120px, 16vw, 220px) 0;
    background: var(--bg-primary);
    text-align: center;
}

.mission-inner {
    max-width: 980px;
    margin: 0 auto;
}

.mission-quote {
    font-family: var(--font-display);
    font-size: clamp(28px, 4.4vw, 56px);
    line-height: 1.25;
    font-weight: 400;
    color: var(--text-secondary);
}

.mission-quote .split-word {
    display: inline-block;
}

.mission-quote .word-accent {
    font-style: italic;
    color: var(--gold);
    font-weight: 500;
}

.mission-mark {
    font-family: var(--font-display);
    font-size: 90px;
    color: var(--gold-line);
    line-height: 1;
    margin-bottom: 8px;
}

/* ==========================================================================
   VALUES
   ========================================================================== */

.values {
    padding: 120px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.values-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 72px;
    gap: 24px;
    flex-wrap: wrap;
}

.values-head h2 {
    font-size: clamp(32px, 4.4vw, 54px);
    max-width: 12ch;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border-subtle);
}

.value-card {
    background: var(--bg-secondary);
    padding: 44px 32px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    transition: background 0.4s var(--ease-out-quart);
}

.value-card:nth-child(4) { grid-column: span 1; }

.value-card:hover { background: var(--bg-card); }

.value-card .value-num {
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--gold-dim);
    letter-spacing: 0.1em;
}

.value-card svg {
    width: 30px;
    height: 30px;
    stroke: var(--gold);
    fill: none;
    stroke-width: 1.3;
}

.value-card h3 {
    font-size: 24px;
    color: var(--text-primary);
    font-weight: 500;
}

.value-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ==========================================================================
   CODE (Кодекс сообщества)
   ========================================================================== */

.code-section {
    padding: 140px 0;
    background: var(--bg-primary);
}

.code-head {
    max-width: 640px;
    margin-bottom: 80px;
}

.code-head h2 {
    font-size: clamp(32px, 4.4vw, 54px);
    margin-top: 20px;
}

.code-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border-subtle);
    border: 1px solid var(--border-subtle);
}

.code-card {
    background: var(--bg-primary);
    padding: 48px;
}

.code-card .code-idx {
    font-family: var(--font-display);
    font-size: 46px;
    color: var(--gold-line);
    display: block;
    margin-bottom: 18px;
}

.code-card h3 {
    font-size: 24px;
    margin-bottom: 14px;
    color: var(--gold);
    font-weight: 500;
}

.code-card p {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 46ch;
}

.code-manifesto {
    margin-top: 64px;
    padding-top: 56px;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.code-manifesto p {
    font-family: var(--font-display);
    font-style: italic;
    font-size: clamp(20px, 2.6vw, 30px);
    color: var(--gold);
}

/* ==========================================================================
   FORMAT (форум-группы / встречи)
   ========================================================================== */

.format-section {
    padding: 140px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
}

.format-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    margin-bottom: 90px;
}

.format-intro h2 {
    font-size: clamp(32px, 4.4vw, 54px);
}

.format-intro p {
    color: var(--text-secondary);
    font-size: 16px;
    align-self: end;
}

.format-list {
    list-style: none;
    border-top: 1px solid var(--border-subtle);
}

.format-item {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    align-items: center;
    gap: 24px;
    padding: 30px 4px;
    border-bottom: 1px solid var(--border-subtle);
    transition: padding-left 0.4s var(--ease-out-quart);
}

.format-item:hover {
    padding-left: 20px;
    background: color-mix(in oklch, var(--gold), transparent 96%);
}

.format-item .format-freq {
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gold-dim);
}

.format-item h4 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
}

.format-item span.format-desc {
    font-size: 13px;
    color: var(--text-muted);
    display: block;
    margin-top: 4px;
}

.format-item .format-tag {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

/* ==========================================================================
   RESIDENTS
   ========================================================================== */

.residents {
    padding: 140px 0 100px;
    background: var(--bg-primary);
}

.residents-head {
    margin-bottom: 64px;
    text-align: center;
}

.residents-head h2 {
    font-size: clamp(32px, 4.4vw, 54px);
    margin-top: 20px;
}

.residents-head p {
    color: var(--text-muted);
    margin-top: 16px;
    max-width: 50ch;
    margin-inline: auto;
}

/* --- CEO spotlight --- */
.ceo-spotlight {
    display: grid;
    grid-template-columns: 0.8fr 1fr;
    gap: 64px;
    align-items: center;
    padding: 56px;
    background: var(--bg-card);
    border: 1px solid var(--border-visible);
    margin-bottom: 96px;
    position: relative;
}

.ceo-spotlight::before {
    content: 'CEO';
    position: absolute;
    top: 24px;
    right: 32px;
    font-size: 11px;
    letter-spacing: 0.24em;
    color: var(--gold-dim);
}

.ceo-photo {
    aspect-ratio: 4/5;
    background: var(--bg-elevated) center/cover;
    filter: grayscale(0.5);
    position: relative;
    overflow: hidden;
}

.ceo-photo .ceo-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 64px;
    color: var(--gold-line);
}

.ceo-role {
    color: var(--gold);
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 18px;
    display: block;
}

.ceo-name {
    font-size: clamp(30px, 3.6vw, 46px);
    margin-bottom: 20px;
}

.ceo-bio {
    color: var(--text-secondary);
    font-size: 16px;
    max-width: 52ch;
}

/* --- Residents masonry grid --- */
.residents-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2px;
    background: var(--border-subtle);
}

.resident-card {
    position: relative;
    aspect-ratio: 3/4;
    overflow: hidden;
    background: var(--bg-card);
    cursor: none;
}

.resident-card:nth-child(7n+1),
.resident-card:nth-child(11n+4) {
    grid-row: span 2;
    aspect-ratio: auto;
}

.resident-photo {
    position: absolute;
    inset: 0;
    background: var(--bg-elevated) center/cover;
    filter: grayscale(1) brightness(0.75);
    transition: filter 0.6s var(--ease-out-quart), transform 0.8s var(--ease-out-quart);
}

.resident-card:hover .resident-photo {
    filter: grayscale(0) brightness(0.9);
    transform: scale(1.05);
}

.resident-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 34px;
    color: var(--gold-line);
    background: var(--bg-elevated);
}

.resident-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 18px;
    background: linear-gradient(0deg, oklch(10% 0.01 90 / 0.9) 0%, transparent 55%);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.4s var(--ease-out-quart), transform 0.4s var(--ease-out-quart);
}

.resident-card:hover .resident-overlay {
    opacity: 1;
    transform: translateY(0);
}

.resident-overlay .r-name {
    font-family: var(--font-display);
    font-size: 17px;
    color: var(--text-primary);
    line-height: 1.2;
}

.resident-overlay .r-company {
    font-size: 11px;
    color: var(--gold);
    letter-spacing: 0.04em;
    margin-top: 4px;
}

/* ==========================================================================
   MEMBERSHIP (критерии)
   ========================================================================== */

.membership {
    padding: 140px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.membership-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 90px;
}

.membership-head h2 {
    font-size: clamp(32px, 4.4vw, 54px);
    margin-top: 20px;
    margin-bottom: 24px;
}

.membership-head p {
    color: var(--text-secondary);
    max-width: 42ch;
}

.criteria-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border-subtle);
    border: 1px solid var(--border-subtle);
    align-content: start;
}

.criteria-item {
    background: var(--bg-secondary);
    padding: 30px 26px;
}

.criteria-item .crit-value {
    font-family: var(--font-display);
    font-size: 34px;
    color: var(--gold);
    display: block;
}

.criteria-item .crit-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
    display: block;
}

.path-steps {
    margin-top: 48px;
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.path-step {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
}

.path-step .step-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gold);
}

/* ==========================================================================
   APPLY FORM
   ========================================================================== */

.apply-section {
    padding: 140px 0;
    background: var(--bg-primary);
}

.apply-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 90px;
}

.apply-head h2 {
    font-size: clamp(32px, 4.4vw, 54px);
    margin-top: 20px;
    margin-bottom: 24px;
}

.apply-head p {
    color: var(--text-secondary);
    max-width: 40ch;
    margin-bottom: 32px;
}

.apply-fact {
    display: flex;
    gap: 18px;
    padding: 20px 0;
    border-top: 1px solid var(--border-subtle);
}

.apply-fact:last-child { border-bottom: 1px solid var(--border-subtle); }

.apply-fact strong {
    font-family: var(--font-display);
    color: var(--gold);
    font-size: 15px;
    min-width: 90px;
}

.apply-fact span { color: var(--text-muted); font-size: 14px; }

.apply-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-field.full { grid-column: span 2; }

.form-field label {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.form-field input,
.form-field select,
.form-field textarea {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-visible);
    padding: 12px 2px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-field select option { background: var(--bg-card); }

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--gold);
}

.form-field textarea { resize: vertical; min-height: 80px; }

.apply-submit {
    grid-column: span 2;
    margin-top: 14px;
    align-self: start;
    width: fit-content;
}

.form-note {
    grid-column: span 2;
    font-size: 12px;
    color: var(--text-muted);
}

.form-success {
    display: none;
    grid-column: span 2;
    padding: 24px;
    border: 1px solid var(--gold-line);
    color: var(--gold);
    font-size: 14px;
}

.form-success.is-visible { display: block; }

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
    padding: 80px var(--gutter) 40px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: var(--container-max);
    margin: 0 auto 60px;
    gap: 40px;
    flex-wrap: wrap;
}

.footer-tagline {
    max-width: 32ch;
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 16px;
}

.footer-nav {
    display: flex;
    gap: 64px;
    flex-wrap: wrap;
}

.footer-col h5 {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--gold-dim);
    margin-bottom: 16px;
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.footer-col a {
    color: var(--text-secondary);
    font-size: 14px;
    transition: color 0.3s;
}

.footer-col a:hover { color: var(--gold); }

.footer-bottom {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-top: 32px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 12px;
}