/* ============================================================
   LESNICHIY.COM — Design System
   Концепция: «Полевой журнал» — винтажный альманах
   ============================================================ */

/* ---------- Шрифты ---------- */
@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Manrope:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ---------- Сброс и базовые ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-rendering: optimizeLegibility;
}

body {
    font-family: 'Manrope', system-ui, sans-serif;
    font-size: 17px;
    line-height: 1.65;
    font-weight: 400;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
    background-image: var(--bg-noise);
    background-attachment: fixed;
}

@media (min-width: 1200px) {
    body { font-size: 18px; }
}

img, picture, svg, video { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
a { color: var(--color-accent); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--color-accent-hover); }

/* ---------- Темная тема (по умолчанию) ---------- */
:root, [data-theme="dark"] {
    /* Природа */
    --color-forest-deep:    #0f1a14;
    --color-forest:         #1c2b22;
    --color-forest-light:   #2a3d32;
    --color-moss:           #4a6b4a;
    --color-leaf:           #7ba05b;
    --color-leaf-bright:    #a8c97e;

    /* Вода */
    --color-water-deep:     #0a1820;
    --color-water:           #1a3540;
    --color-mist:            #6b8a96;

    /* Охра / закат */
    --color-ochre:           #c8954a;
    --color-ochre-bright:    #e0b070;
    --color-rust:            #a8612d;
    --color-amber:           #d9a45f;

    /* Туман / бумага */
    --color-parchment:       #d4c8a8;
    --color-fog:             #94a39a;

    /* Семантика */
    --color-bg:              var(--color-forest-deep);
    --color-bg-soft:         var(--color-forest);
    --color-bg-elevated:     var(--color-forest-light);
    --color-surface:         rgba(28, 43, 34, 0.7);
    --color-border:          rgba(168, 201, 126, 0.15);
    --color-border-strong:   rgba(168, 201, 126, 0.3);

    --color-text:            #f0e8d2;
    --color-text-soft:       #c4bca0;
    --color-text-muted:      #8a8270;
    --color-heading:         #faf3df;

    --color-accent:          var(--color-leaf-bright);
    --color-accent-hover:    var(--color-leaf);
    --color-accent-soft:     rgba(168, 201, 126, 0.1);

    --color-warning:         var(--color-ochre);
    --color-danger:          #c97766;
    --color-success:         var(--color-leaf);

    /* Шум — лёгкая зернистость */
    --bg-noise: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");

    /* Тени */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3), 0 2px 4px rgba(0,0,0,0.2);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.45), 0 4px 12px rgba(0,0,0,0.3);
    --shadow-glow: 0 0 24px rgba(168, 201, 126, 0.15);

    /* Декор */
    --color-decor: rgba(200, 149, 74, 0.3);
}

/* ---------- Светлая тема ---------- */
[data-theme="light"] {
    /* Семантика */
    --color-bg:              #f5efe0;
    --color-bg-soft:         #ebe3cf;
    --color-bg-elevated:     #fff8e7;
    --color-surface:         rgba(255, 248, 231, 0.85);
    --color-border:          rgba(60, 80, 60, 0.15);
    --color-border-strong:   rgba(60, 80, 60, 0.3);

    --color-text:            #1a1410;
    --color-text-soft:       #3d3528;
    --color-text-muted:      #6b6151;
    --color-heading:         #0d0907;

    --color-accent:          #4a6b3a;
    --color-accent-hover:    #2d5016;
    --color-accent-soft:     rgba(74, 107, 58, 0.1);

    --color-warning:         #a8612d;
    --color-danger:          #a04e3a;
    --color-success:         #4a6b3a;

    --bg-noise: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");

    --shadow-sm: 0 1px 2px rgba(60,50,30,0.08);
    --shadow-md: 0 4px 16px rgba(60,50,30,0.12), 0 2px 4px rgba(60,50,30,0.06);
    --shadow-lg: 0 12px 40px rgba(60,50,30,0.18), 0 4px 12px rgba(60,50,30,0.1);
    --shadow-glow: 0 0 20px rgba(74, 107, 58, 0.12);

    --color-decor: rgba(74, 107, 58, 0.3);
}

/* ---------- Типографика ---------- */
.font-display, h1, h2, h3, h4, h5, h6 {
    font-family: 'Lora', Georgia, serif;
    font-weight: 600;
    color: var(--color-heading);
    line-height: 1.2;
    letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

.lead {
    font-size: 1.25rem;
    color: var(--color-text);
    font-weight: 400;
    line-height: 1.7;
}

.font-mono { font-family: 'JetBrains Mono', monospace; }

::selection {
    background: var(--color-accent);
    color: var(--color-forest-deep);
}

/* ---------- Контейнер ---------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow { max-width: 880px; }
.container-wide { max-width: 1440px; }

@media (max-width: 640px) {
    .container { padding: 0 16px; }
}

/* ---------- Кнопки ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 26px;
    font-family: 'Manrope', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.02em;
    border-radius: 2px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .25s cubic-bezier(.4, 0, .2, 1);
    text-decoration: none;
    line-height: 1;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--color-leaf);
    color: var(--color-forest-deep);
    border-color: var(--color-leaf);
}
.btn-primary:hover {
    background: var(--color-leaf-bright);
    border-color: var(--color-leaf-bright);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: var(--color-forest-deep);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border-strong);
}
.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-soft);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-soft);
    padding: 8px 12px;
}
.btn-ghost:hover {
    color: var(--color-accent);
    background: var(--color-accent-soft);
}

.btn-ochre {
    background: var(--color-ochre);
    color: var(--color-forest-deep);
    border-color: var(--color-ochre);
}
.btn-ochre:hover {
    background: var(--color-ochre-bright);
    border-color: var(--color-ochre-bright);
    transform: translateY(-1px);
}

.btn-lg { padding: 17px 34px; font-size: 1.08rem; }
.btn-sm { padding: 9px 16px; font-size: 0.9rem; }

/* ---------- Формы ---------- */
.field {
    margin-bottom: 20px;
}
.field label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
    letter-spacing: 0.02em;
}
.input, .textarea, .select {
    width: 100%;
    padding: 12px 14px;
    background: var(--color-bg-soft);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    font-size: 1rem;
    transition: border-color .2s, background .2s;
}
.input:focus, .textarea:focus, .select:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg);
}
.textarea { resize: vertical; min-height: 100px; }

/* ---------- Декоративные элементы ---------- */
.divider-ornament {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--color-decor);
    margin: 32px 0;
}
.divider-ornament::before,
.divider-ornament::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-decor), transparent);
    max-width: 200px;
}
.divider-ornament svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.eyebrow {
    display: inline-block;
    font-family: 'Manrope', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-ochre);
    margin-bottom: 12px;
}

/* ---------- Карточки ---------- */
.card {
    background: var(--color-surface);
    backdrop-filter: blur(8px);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 24px;
    transition: transform .3s, box-shadow .3s, border-color .3s;
}
.card:hover {
    transform: translateY(-2px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-md);
}

/* ---------- Доступность ---------- */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ---------- Утилиты ---------- */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

.text-center { text-align: center; }
.text-soft { color: var(--color-text-soft); }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-ochre { color: var(--color-ochre); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }
.mb-6 { margin-bottom: 64px; }
.mt-0 { margin-top: 0; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-6 { margin-top: 64px; }