/* ==========================================================================
   0B0T.RU — High-Voltage Industrial Terminal Design System with Animations
   ========================================================================== */

:root {
    --bg-base: #040405;
    --bg-surface: #0a0a0c;
    --bg-elevated: #101014;
    --border-line: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.18);
    --border-hover: #ff6a00;
    
    --text-main: #ededed;
    --text-muted: #73737d;
    --text-faint: #42424b;
    
    --signal: #ff6a00;
    --signal-dim: rgba(255, 106, 0, 0.15);
    --success: #22c55e;
    --danger: #ef4444;
    
    --header-bg: rgba(4, 4, 5, 0.92);
}

[data-theme="light"] {
    --bg-base: #f4f4f6;
    --bg-surface: #ffffff;
    --bg-elevated: #eaeaeef;
    --border-line: rgba(0, 0, 0, 0.1);
    --border-strong: rgba(0, 0, 0, 0.2);
    --border-hover: #e65c00;
    
    --text-main: #121215;
    --text-muted: #62626d;
    --text-faint: #9999a3;
    
    --signal: #e65c00;
    --signal-dim: rgba(230, 92, 0, 0.12);
    --success: #16a34a;
    --danger: #dc2626;
    
    --header-bg: rgba(244, 244, 246, 0.92);
}

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

html {
    scroll-behavior: smooth;
    font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
    color-scheme: dark light;
}

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.5;
    font-size: 13.5px;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

.mono {
    font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

@media (min-width: 768px) {
    .container {
        padding: 0 3rem;
    }
}

.text-signal { color: var(--signal); }
.text-success { color: var(--success); }
.text-muted { color: var(--text-muted); }
.text-faint { color: var(--text-faint); }

/* Header & Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-line);
    animation: slideDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.nav-wrap {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-main);
    transition: transform 0.2s ease;
}

.logo-link:hover {
    transform: scale(1.02);
}

.logo-symbol {
    font-size: 1rem;
    font-weight: 800;
    background: var(--signal);
    color: #040405;
    padding: 0.25rem 0.5rem;
    border-radius: 2px;
    letter-spacing: -0.05em;
    animation: pulseGlow 3s infinite;
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 106, 0, 0.4); }
    50% { box-shadow: 0 0 12px 2px rgba(255, 106, 0, 0.6); }
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.logo-text span {
    color: var(--signal);
}

.nav-desktop {
    display: none;
}

@media (min-width: 768px) {
    .nav-desktop {
        display: block;
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: color 0.2s ease, transform 0.2s ease;
    display: inline-block;
}

.nav-link:hover {
    color: var(--text-main);
    transform: translateY(-1px);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-line);
    color: var(--text-main);
    width: 36px;
    height: 36px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
    border-color: var(--signal);
    transform: rotate(15deg);
}

.theme-toggle-btn svg {
    width: 16px;
    height: 16px;
}

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

.btn-terminal {
    background: var(--signal);
    color: #040405;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.825rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 14px rgba(255, 106, 0, 0.25);
}

.btn-terminal:hover {
    opacity: 0.95;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 106, 0, 0.4);
}

/* Hero Section */
.hero {
    padding-top: calc(64px + 5rem);
    padding-bottom: 6rem;
    border-bottom: 1px solid var(--border-line);
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1.2fr 1fr;
        align-items: center;
    }
}

.hero-left {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    animation: slideInLeft 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--signal);
    background: var(--signal-dim);
    padding: 0.375rem 0.75rem;
    border-left: 2px solid var(--signal);
    width: fit-content;
}

.hero-title {
    font-size: clamp(2.5rem, 5.5vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 0.95;
    text-transform: uppercase;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 580px;
}

/* Terminal Interactive Box */
.terminal-box {
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    overflow: hidden;
    animation: slideInRight 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.terminal-box:hover {
    border-color: rgba(255, 106, 0, 0.4);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

.terminal-header {
    background: var(--bg-elevated);
    padding: 0.875rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-line);
}

.terminal-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.terminal-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.ip-command-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ip-label {
    font-size: 0.7rem;
    color: var(--text-faint);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.ip-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-base);
    border: 1px solid var(--border-line);
    padding: 0.875rem 1rem;
    border-radius: 4px;
    transition: border-color 0.2s ease;
}

.ip-row:hover {
    border-color: var(--border-strong);
}

.ip-address {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.btn-copy-ip {
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    color: var(--text-main);
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-copy-ip:hover {
    border-color: var(--signal);
    color: var(--signal);
    background: var(--signal-dim);
    transform: translateY(-1px);
}

.btn-copy-ip:active {
    transform: translateY(0);
}

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

.metric-item {
    background: var(--bg-surface);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: background 0.2s ease;
}

.metric-item:hover {
    background: var(--bg-elevated);
}

.metric-key {
    font-size: 0.65rem;
    color: var(--text-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.metric-val {
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: statusPulse 2s infinite;
}

@keyframes statusPulse {
    0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
    100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.status-indicator.offline {
    background: var(--danger);
    animation: offlinePulse 2s infinite;
}

@keyframes offlinePulse {
    0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
    100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Sections */
.section {
    padding: 6rem 0;
    border-bottom: 1px solid var(--border-line);
}

.section-alt {
    background: var(--bg-surface);
}

.section-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 4rem;
    max-width: 700px;
}

.section-tag {
    font-size: 0.75rem;
    color: var(--signal);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.section-title {
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    text-transform: uppercase;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Pillars Grid (Hairline Grid) */
.pillars-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background: var(--border-strong);
    border: 1px solid var(--border-strong);
}

@media (min-width: 768px) {
    .pillars-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .pillars-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pillar-cell {
    background: var(--bg-surface);
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: background 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.pillar-cell:hover {
    background: var(--bg-elevated);
    transform: translateY(-3px);
    z-index: 2;
    border-color: var(--signal);
}

.pillar-number {
    font-size: 0.75rem;
    color: var(--signal);
    font-weight: 700;
    letter-spacing: 0.08em;
}

.pillar-cell h3 {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.pillar-cell p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Vote Grid */
.vote-matrix {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .vote-matrix {
        grid-template-columns: repeat(3, 1fr);
    }
}

.vote-node {
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.vote-node:hover {
    transform: translateY(-4px);
    border-color: var(--signal);
    box-shadow: 0 10px 25px rgba(0,0,0,0.25);
}

.vote-node-top {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-line);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.vote-node-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vote-id {
    font-size: 0.7rem;
    color: var(--text-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.vote-node-top h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.vote-node-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.vote-embed-frame {
    background: var(--bg-base);
    border: 1px solid var(--border-line);
    padding: 0.5rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-vote-link {
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-line);
    color: var(--text-main);
    text-decoration: none;
    padding: 1rem 1.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.2s ease, color 0.2s ease;
}

.btn-vote-link:hover {
    background: var(--signal);
    color: #040405;
}

.btn-vote-link span:last-child {
    transition: transform 0.2s ease;
}

.btn-vote-link:hover span:last-child {
    transform: translateX(4px);
}

/* Guide Steps */
.guide-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

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

.guide-step {
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    padding: 2.5rem;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.guide-step:hover {
    transform: translateY(-3px);
    border-color: var(--signal);
}

.guide-step-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--signal);
}

.guide-step h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.guide-step p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Footer */
.site-footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-line);
    padding: 4rem 0;
    margin-top: auto;
}

.footer-wrap {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    justify-content: space-between;
    align-items: flex-start;
}

@media (min-width: 768px) {
    .footer-wrap {
        flex-direction: row;
        align-items: center;
    }
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-right {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    align-items: flex-start;
}

@media (min-width: 768px) {
    .footer-right {
        align-items: flex-end;
    }
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-elevated);
    border: 1px solid var(--signal);
    color: var(--text-main);
    padding: 1rem 1.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    z-index: 1000;
    opacity: 0;
    transform: translateY(1rem);
    pointer-events: none;
    transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}