/* ============================================================
   ПЕРЕМЕННЫЕ
   ============================================================ */
:root {
    --green-dark: #0A3323;
    --green: #839958;
    --cream: #F7F4D5;
    --pink: #D3968C;
    --blue: #105666;

    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;

    --radius-card: 20px;
    --radius-btn: 999px;
    --shadow-soft: 0 8px 32px rgba(0,0,0,0.25);
}

/* ============================================================
   БАЗОВЫЕ СТИЛИ
   ============================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    background: var(--green-dark);
    color: var(--cream);
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.6;
    min-height: 100vh;
    padding: 16px 16px 40px;
    position: relative;
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
    display: block;
    border-radius: 16px;
}

/* ============================================================
   ФОНОВЫЕ РАЗМЫТЫЕ ПЯТНА
   ============================================================ */
.bg-blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.12;
    pointer-events: none;
    z-index: 0;
}
.bg-blob--1 {
    width: 300px;
    height: 300px;
    top: -80px;
    right: -60px;
    background: var(--blue);
}
.bg-blob--2 {
    width: 400px;
    height: 400px;
    bottom: 20%;
    left: -120px;
    background: var(--pink);
}
.bg-blob--3 {
    width: 250px;
    height: 250px;
    top: 40%;
    right: -50px;
    background: var(--green);
}
.bg-blob--4 {
    width: 350px;
    height: 350px;
    bottom: 0;
    right: -100px;
    background: var(--cream);
    opacity: 0.06;
}

/* ============================================================
   ОСНОВНОЙ КОНТЕЙНЕР
   ============================================================ */
.main-page,
.page {
    position: relative;
    z-index: 1;
    max-width: 480px;
    margin: 0 auto;
}

/* ============================================================
   ШАПКА
   ============================================================ */
.header {
    margin-bottom: 32px;
    text-align: center;
}
.header__title {
    font-family: var(--font-serif);
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--cream);
    text-shadow: 0 2px 12px rgba(0,0,0,0.3);
    margin-bottom: 8px;
}
.header__subtitle {
    font-size: 0.95rem;
    opacity: 0.75;
    max-width: 320px;
    margin: 0 auto;
    line-height: 1.5;
}

/* ============================================================
   ТЕХНИКИ (БЛОКИ)
   ============================================================ */
.technique {
    background: rgba(10, 51, 35, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(131, 153, 88, 0.15);
    border-radius: var(--radius-card);
    padding: 20px 18px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-soft);
}
.technique__title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--cream);
    margin-bottom: 4px;
}
.technique__desc {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 18px;
    line-height: 1.5;
}

/* ============================================================
   ГРУППА СЛОЖНОСТЕЙ
   ============================================================ */
.difficulty-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.difficulty {
    background: rgba(0,0,0,0.15);
    border-radius: 16px;
    padding: 12px;
    border: 1px solid rgba(255,255,255,0.04);
}

.difficulty__btn {
    display: inline-block;
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-btn);
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--cream);
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    touch-action: manipulation;
    margin-bottom: 10px;
}
.difficulty__btn:active {
    transform: scale(0.96);
    background: rgba(255,255,255,0.08);
}
.difficulty__btn[data-level="simple"] { border-color: var(--green); color: var(--green); }
.difficulty__btn[data-level="medium"] { border-color: #d4b87a; color: #d4b87a; }
.difficulty__btn[data-level="hard"] { border-color: #c77a6a; color: #c77a6a; }

/* ============================================================
   ГАЛЕРЕЯ
   ============================================================ */
.gallery__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 6px;
}
.gallery__grid img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.25);
    transition: transform 0.15s;
    cursor: pointer;
    background: #1e3d2e;
}
.gallery__grid img:active {
    transform: scale(0.97);
}

.gallery__show-more {
    display: inline-block;
    margin-top: 12px;
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-btn);
    padding: 10px 24px;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--cream);
    cursor: pointer;
    transition: background 0.2s;
    touch-action: manipulation;
}
.gallery__show-more:active {
    background: rgba(255,255,255,0.08);
}

/* ============================================================
   НИЖНЯЯ НАВИГАЦИЯ
   ============================================================ */
.bottom-nav {
    margin-top: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    background: rgba(10, 51, 35, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-card);
    padding: 20px 16px;
    border: 1px solid rgba(131, 153, 88, 0.12);
}
.bottom-nav__link {
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-btn);
    padding: 8px 18px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--cream);
    transition: background 0.2s;
    white-space: nowrap;
    touch-action: manipulation;
}
.bottom-nav__link:active {
    background: rgba(255,255,255,0.08);
}

/* ============================================================
   КНОПКА НАЗАД (для внутренних страниц)
   ============================================================ */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-btn);
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--cream);
    cursor: pointer;
    transition: background 0.2s;
    touch-action: manipulation;
    margin-bottom: 20px;
}
.back-btn:active {
    background: rgba(255,255,255,0.08);
}

/* ============================================================
   СТРАНИЦА РЕФЕРЕНСА (reference.html)
   ============================================================ */
.ref-page .ref-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: var(--radius-card);
    margin-bottom: 20px;
    box-shadow: var(--shadow-soft);
    background: #1e3d2e;
}
.ref-page .ref-title {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 4px;
}
.ref-page .ref-desc {
    opacity: 0.75;
    font-size: 0.95rem;
    margin-bottom: 18px;
    line-height: 1.5;
}
.ref-page .ref-meta {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.ref-page .meta-item {
    background: rgba(255,255,255,0.03);
    border-radius: 16px;
    padding: 14px 16px;
    border: 1px solid rgba(255,255,255,0.04);
    transition: background 0.15s;
    cursor: pointer;
}
.ref-page .meta-item:active {
    background: rgba(255,255,255,0.06);
}
.ref-page .meta-item .label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    opacity: 0.5;
    display: block;
    margin-bottom: 2px;
}
.ref-page .meta-item .value {
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.ref-page .difficulty-indicator {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 4px;
}
.difficulty-indicator.simple { background: var(--green); }
.difficulty-indicator.medium { background: #d4b87a; }
.difficulty-indicator.hard { background: #c77a6a; }

.ref-page .color-dots {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 4px;
}
.ref-page .color-dot {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
}
.ref-page .color-dot .circle {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.1);
}

/* ============================================================
   ОБЩИЕ СТИЛИ ДЛЯ СТРАНИЦ (difficulty, appliques, details, colors, process, defects)
   ============================================================ */
.page-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 4px;
}
.page-subtitle {
    opacity: 0.7;
    margin-bottom: 24px;
    font-size: 1rem;
    line-height: 1.5;
}

.section-block {
    background: rgba(10, 51, 35, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-card);
    padding: 20px 18px;
    margin-bottom: 24px;
    border: 1px solid rgba(131, 153, 88, 0.08);
}
.section-block h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 6px;
}
.section-block p, .section-block li {
    opacity: 0.8;
    font-size: 0.92rem;
    line-height: 1.6;
}
.section-block ul {
    padding-left: 20px;
    margin: 8px 0;
}
.section-block .mini-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 12px;
}
.section-block .mini-gallery img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 12px;
    background: #1e3d2e;
}

/* Список цветов */
.color-list {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin: 12px 0;
}
.color-list .color-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}
.color-list .color-item .swatch {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.1);
}

/* Временная шкала (process) */
.timeline {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.timeline .step {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}
.timeline .step .num {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--green);
    min-width: 40px;
    line-height: 1.2;
}
.timeline .step .content h4 {
    font-weight: 600;
    font-size: 1rem;
}
.timeline .step .content p {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Акцентный блок (process) */
.emphasis-block {
    background: rgba(131, 153, 88, 0.15);
    border: 1px solid var(--green);
    border-radius: var(--radius-card);
    padding: 20px;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 500;
    margin-top: 12px;
}

/* ============================================================
   АДАПТИВ ДЛЯ ДЕСКТОПА (вторично)
   ============================================================ */
@media (min-width: 600px) {
    body { padding: 32px 40px; }
    .main-page, .page { max-width: 600px; }
    .gallery__grid { grid-template-columns: repeat(3, 1fr); }
    .technique { padding: 28px 24px; }
}
@media (min-width: 1024px) {
    .main-page, .page { max-width: 760px; }
}