:root {
    --accent-1: #00E0FF;
    --secondary-1: #050505;
    --neutral-800: #0B0B0B;
    --neutral-700: #1E1E1E;
    --neutral-600: #404040;
    --neutral-500: #828282;
    --neutral-400: #AFAFAF;
    --neutral-300: #DDDDDD;
    --neutral-200: #F5F5F5;
    --neutral-100: #FFFFFF;
    --blue-400: #00E0FF;
    --blue-300: #0ac4ddff;
    --blue-200: #8FC3FF;
    --blue-100: #EAF4FF;
    --green-400: #11845B;
    --green-300: #05C168;
    --green-200: #7FDCA4;
    --green-100: #DEF2E6;
    --red-400: #DC2B2B;
    --red-300: #FF5A65;
    --red-200: #FFBEC2;
    --red-100: #FFEFF0;
    --orange-400: #D5691B;
    --orange-300: #FF9E2C;
    --orange-200: #FFD19B;
    --orange-100: #FFF3E4;
    --shadow-01: rgba(0,0,0,0.08);
    --shadow-02: rgba(0,0,0,0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; height: 100%; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--secondary-1);
    color: var(--neutral-100);
    font-size: 18px;
    line-height: 1.667em;
    min-height: 100%;
}

h1, h2, h3, h4, h5, h6 { font-weight: 400; margin-bottom: 16px; color: var(--neutral-100); }
h1 { font-size: 54px; line-height: 1.222em; }
h2 { font-size: 38px; line-height: 1.316em; }
h3 { font-size: 24px; line-height: 1.417em; }
h4 { font-size: 22px; line-height: 1.273em; }
h5 { font-size: 18px; line-height: 1.333em; }
h6 { font-size: 16px; line-height: 1.375em; }

p { margin-bottom: 16px; color: var(--neutral-400); }
a { color: var(--accent-1); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--blue-300); }

img { max-width: 100%; display: inline-block; vertical-align: middle; }

/* Page Layout */
.page-wrapper { display: flex; min-height: 100vh; }

.style-sidebar {
    width: 280px;
    background-color: var(--neutral-800);
    border-right: 1px solid var(--neutral-700);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 32px 24px;
    z-index: 100;
}

.style-main {
    flex: 1;
    margin-left: 280px;
    background-color: var(--secondary-1);
}

.sidebar-logo { margin-bottom: 40px; }
.sidebar-logo img { max-width: 180px; }

.sidebar-nav { list-style: none; }
.sidebar-nav-item { margin-bottom: 8px; }
.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--neutral-400);
    font-size: 16px;
    transition: all 0.2s;
}
.sidebar-nav-link:hover, .sidebar-nav-link.active {
    background-color: var(--neutral-700);
    color: var(--neutral-100);
}
.sidebar-nav-link i { width: 20px; text-align: center; }

/* Content Sections */
.style-content { padding: 64px 80px; }
.style-content-wrapper { margin-bottom: 80px; }
.style-content-wrapper:last-child { margin-bottom: 0; }

.style-heading {
    text-align: center;
    padding: 80px 40px;
    border-bottom: 1px solid var(--neutral-700);
}

.style-heading h1 { font-size: 72px; line-height: 1.167em; margin-bottom: 24px; }
.style-heading p { font-size: 18px; max-width: 600px; margin: 0 auto 32px; }

.style-content-heading {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--neutral-700);
}

.style-heading-icon {
    width: 48px;
    height: 48px;
    background-color: var(--neutral-700);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.style-heading-icon img { width: 24px; height: 24px; }

.style-content-heading h2 { margin-bottom: 0; }

.style-block-sub-heading { margin-bottom: 24px; }
.style-block-sub-heading h2 { font-size: 24px; margin-bottom: 0; }

.divider {
    height: 1px;
    background-color: var(--neutral-700);
    margin: 48px 0;
}

/* Grid Systems */
.grid-4-columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.grid-3-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-2-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

/* Cards */
.card {
    background-color: var(--secondary-1);
    border: 1px solid var(--neutral-700);
    border-radius: 24px;
    overflow: hidden;
}

.style-card-wrapper {
    background-color: var(--neutral-800);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.style-card-wrapper:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--shadow-01);
}

/* Color Blocks */
.style-color-block {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
}

.style-color-block-content { padding: 20px; }
.style-color-block-name { font-weight: 500; margin-bottom: 4px; color: var(--neutral-100); }
.style-color-block-hex { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 14px; color: var(--neutral-400); }

/* Background Colors */
.bg-accent-1 { background-color: var(--accent-1); }
.bg-secondary-1 { background-color: var(--secondary-1); }
.bg-neutral-800 { background-color: var(--neutral-800); }
.bg-neutral-700 { background-color: var(--neutral-700); }
.bg-neutral-600 { background-color: var(--neutral-600); }
.bg-neutral-500 { background-color: var(--neutral-500); }
.bg-neutral-400 { background-color: var(--neutral-400); }
.bg-neutral-300 { background-color: var(--neutral-300); }
.bg-neutral-200 { background-color: var(--neutral-200); }
.bg-neutral-100 { background-color: var(--neutral-100); }
.bg-blue-400 { background-color: var(--blue-400); }
.bg-blue-300 { background-color: var(--blue-300); }
.bg-blue-200 { background-color: var(--blue-200); }
.bg-blue-100 { background-color: var(--blue-100); }
.bg-green-400 { background-color: var(--green-400); }
.bg-green-300 { background-color: var(--green-300); }
.bg-green-200 { background-color: var(--green-200); }
.bg-green-100 { background-color: var(--green-100); }
.bg-red-400 { background-color: var(--red-400); }
.bg-red-300 { background-color: var(--red-300); }
.bg-red-200 { background-color: var(--red-200); }
.bg-red-100 { background-color: var(--red-100); }
.bg-orange-400 { background-color: var(--orange-400); }
.bg-orange-300 { background-color: var(--orange-300); }
.bg-orange-200 { background-color: var(--orange-200); }
.bg-orange-100 { background-color: var(--orange-100); }

/* Text Colors */
.color-light { color: var(--neutral-100); }
.color-dark { color: var(--secondary-1); }

/* Typography Grid */
.typography-block-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    align-items: center;
    padding: 40px 0;
    border-bottom: 1px solid var(--neutral-700);
}

.typography-block-grid:last-child { border-bottom: none; }

.text-200 { font-size: 16px; line-height: 1.125em; }
.color-accent-1 { color: var(--accent-1); }

.display-1 { font-size: 72px; line-height: 1.167em; }
.display-2 { font-size: 54px; line-height: 1.222em; }
.display-3 { font-size: 34px; line-height: 1.294em; }
.display-4 { font-size: 24px; line-height: 1.417em; }

/* Shadows */
.shadows-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.shadow-card {
    background-color: var(--neutral-800);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
}

.shadow-01 { box-shadow: 0 1px 2px rgba(42,42,42); }
.shadow-02 { box-shadow: 0 4px 8px rgba(42,42,42); }
.shadow-03 { box-shadow: 0 8px 16px rgba(42,42,42); }
.shadow-04 { box-shadow: 0 12px 24px rgba(42,42,42); }
.shadow-05 { box-shadow: 0 16px 32px rgba(42,42,42); }
.shadow-06 { box-shadow: 0 24px 48px rgba(42,42,42); }

/* Buttons */
.btn-primary {
    background-color: var(--accent-1);
    color: var(--secondary-1);
    padding: 16px 32px;
    border-radius: 100px;
    font-weight: 500;
    font-size: 18px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255,255,255,0.2);
}

.btn-secondary {
    background-color: transparent;
    color: var(--neutral-100);
    padding: 16px 32px;
    border-radius: 100px;
    font-weight: 500;
    font-size: 18px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--neutral-600);
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-secondary:hover {
    background-color: var(--neutral-700);
    border-color: var(--neutral-500);
}

.btn-small { padding: 10px 20px; font-size: 14px; }
.btn-large { padding: 20px 40px; font-size: 20px; }

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
}

.badge.primary { background-color: var(--accent-1); color: var(--secondary-1); }
.badge.secondary { background-color: transparent; border: 1px solid var(--neutral-600); color: var(--neutral-100); }
.badge.small { padding: 6px 12px; font-size: 12px; }
.badge.large { padding: 10px 20px; font-size: 16px; }

/* Icons Grid */
.icons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 16px;
}

.icon-card {
    background-color: var(--neutral-700);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all 0.3s;
}

.icon-card:hover {
    background-color: var(--neutral-600);
    transform: translateY(-2px);
}

.icon-card img { width: 48px; height: 48px; object-fit: contain; }
.icon-card span { font-size: 12px; color: var(--neutral-400); text-align: center; }

/* Logo Display Section */
.logo-display-section { margin-bottom: 64px; }

.logo-display-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.logo-display-card {
    background-color: var(--neutral-800);
    border-radius: 16px;
    overflow: hidden;
}

.logo-display-preview {
    position: relative;
    padding: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.logo-display-preview.dark-bg { background-color: var(--secondary-1); }
.logo-display-preview.light-bg { background-color: var(--neutral-100); }
.logo-display-preview.gray-bg { background-color: var(--neutral-600); }

.logo-display-preview img {
    max-width: 200px;
    max-height: 100px;
    object-fit: contain;
}

/* Measurement Lines */
.logo-with-measurements {
    position: relative;
    display: inline-block;
}

.measurement-line {
    position: absolute;
    background-color: var(--blue-300);
}

.measurement-line.horizontal {
    height: 1px;
    left: -40px;
    right: -40px;
}

.measurement-line.vertical {
    width: 1px;
    top: -40px;
    bottom: -40px;
}

.measurement-line.top { top: 0; }
.measurement-line.bottom { bottom: 0; }
.measurement-line.left { left: 0; }
.measurement-line.right { right: 0; }

.measurement-cap {
    position: absolute;
    width: 8px;
    height: 8px;
    border: 1px solid var(--blue-300);
}

.measurement-cap.horizontal {
    width: 1px;
    height: 8px;
    background-color: var(--blue-300);
}

.measurement-cap.vertical {
    width: 8px;
    height: 1px;
    background-color: var(--blue-300);
}

.measurement-label {
    position: absolute;
    font-size: 11px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--blue-300);
    background-color: var(--neutral-800);
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
}

.logo-display-info {
    padding: 20px 24px;
    border-top: 1px solid var(--neutral-700);
}

.logo-display-name {
    font-weight: 500;
    font-size: 16px;
    margin-bottom: 4px;
    color: var(--neutral-100);
}

.logo-display-type {
    font-size: 14px;
    color: var(--neutral-400);
}

/* Logo Measurement Container */
.logo-measurement-container {
    position: relative;
    padding: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-measurement-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.logo-measurement-wrapper img {
    display: block;
    max-width: 180px;
}

/* Measurement Guides */
.measurement-guide {
    position: absolute;
    pointer-events: none;
}

.measurement-guide-h {
    height: 1px;
    background: var(--blue-300);
    left: -50px;
    right: -50px;
}

.measurement-guide-v {
    width: 1px;
    background: var(--blue-300);
    top: -50px;
    bottom: -50px;
}

.measurement-guide-h.top { top: 0; }
.measurement-guide-h.bottom { bottom: 0; }
.measurement-guide-v.left { left: 0; }
.measurement-guide-v.right { right: 0; }

.measurement-end {
    position: absolute;
    width: 1px;
    height: 12px;
    background: var(--blue-300);
}

.measurement-end.left { left: -50px; transform: translateY(-50%); }
.measurement-end.right { right: -50px; transform: translateY(-50%); }

.measurement-end-v {
    position: absolute;
    width: 12px;
    height: 1px;
    background: var(--blue-300);
}

.measurement-end-v.top { top: -50px; transform: translateX(-50%); }
.measurement-end-v.bottom { bottom: -50px; transform: translateX(-50%); }

.measurement-value {
    position: absolute;
    font-size: 11px;
    font-family: 'SF Mono', monospace;
    color: var(--blue-300);
    background: var(--neutral-800);
    padding: 2px 6px;
    border-radius: 3px;
}

.measurement-value.width {
    bottom: -35px;
    left: 50%;
    transform: translateX(-50%);
}

.measurement-value.height {
    right: -70px;
    top: 50%;
    transform: translateY(-50%);
}

/* Essence Cards */
.essence-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.essence-card {
    background-color: var(--neutral-800);
    border-radius: 24px;
    padding: 40px;
    transition: all 0.3s;
}

.essence-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.2);
}

.essence-icon {
    width: 56px;
    height: 56px;
    background-color: var(--neutral-700);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--accent-1);
}

.essence-card h3 { font-size: 22px; margin-bottom: 12px; }
.essence-card p { margin-bottom: 0; line-height: 1.6; }

/* Downloads */
.downloads-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.download-card {
    background-color: var(--neutral-800);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.download-card:hover {
    border-color: var(--accent-1);
    transform: translateY(-4px);
}

.download-icon {
    width: 64px;
    height: 64px;
    background-color: var(--neutral-700);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: var(--accent-1);
}

.download-card h4 { font-size: 18px; margin-bottom: 8px; }
.download-card p { font-size: 14px; margin-bottom: 20px; }

/* Footer */
.footer {
    background-color: var(--neutral-800);
    padding: 64px 80px 32px;
    border-top: 1px solid var(--neutral-700);
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.6; }
.footer-links h4 { font-size: 16px; margin-bottom: 20px; color: var(--neutral-100); }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: var(--neutral-400); font-size: 14px; }
.footer-links a:hover { color: var(--neutral-100); }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--neutral-700);
}

.footer-bottom p { color: var(--neutral-500); font-size: 14px; margin: 0; }

.social-links { display: flex; gap: 12px; }
.social-links a {
    width: 40px;
    height: 40px;
    background-color: var(--neutral-700);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neutral-400);
    transition: all 0.3s;
}
.social-links a:hover { background-color: var(--accent-1); color: var(--secondary-1); }

/* Responsive */
@media (max-width: 1200px) {
    .grid-4-columns { grid-template-columns: repeat(2, 1fr); }
    .downloads-grid { grid-template-columns: repeat(2, 1fr); }
    .logo-display-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 991px) {
    .style-sidebar { display: none; }
    .style-main { margin-left: 0; }
    .style-content { padding: 40px; }
    .footer { padding: 48px 40px 24px; }
    .footer-top { grid-template-columns: 1fr 1fr; }
    .essence-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
    .grid-4-columns, .grid-3-columns, .grid-2-columns { grid-template-columns: 1fr; }
    .typography-block-grid { grid-template-columns: 1fr; }
    .shadows-grid { grid-template-columns: 1fr; }
    .logo-display-grid { grid-template-columns: 1fr; }
    .downloads-grid { grid-template-columns: 1fr; }
    .essence-grid { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; }
    .style-heading h1 { font-size: 48px; }
    .display-1 { font-size: 48px; }
    .display-2 { font-size: 36px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--neutral-800); }
::-webkit-scrollbar-thumb { background: var(--neutral-600); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--neutral-500); }

/* Copy Button */
.copy-btn {
    background: none;
    border: none;
    color: var(--neutral-500);
    cursor: pointer;
    padding: 4px;
    transition: color 0.3s;
}
.copy-btn:hover { color: var(--blue-300); }

/* Buttons Showcase */
.buttons-showcase { display: grid; gap: 48px; }
.buttons-category h3 { font-size: 20px; margin-bottom: 24px; color: var(--neutral-300); }
.buttons-row { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; }
.btn-demo { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.btn-demo span { font-size: 14px; color: var(--neutral-500); }

.btn-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
}
.btn-circle.primary { background-color: var(--accent-1); color: var(--secondary-1); }
.btn-circle.secondary { background-color: transparent; border: 1px solid var(--neutral-600); color: var(--neutral-100); }
.btn-circle.small { width: 36px; height: 36px; }
.btn-circle.large { width: 60px; height: 60px; }

/* Icon Font Grid */
.icon-font-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: 24px;
}

.icon-font-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    min-height: 40px;
    font-size: 24px;
    color: var(--neutral-100);
    transition: transform 0.3s, color 0.3s;
    cursor: pointer;
}

.icon-font-item:hover {
    transform: scale(1.2);
    color: var(--accent-1);
}

.icon-font-item.social-icon-font {
    font-family: 'Social Icons Font', sans-serif;
    font-size: 20px;
}

.icon-font-item.line-rounded-icon {
    font-family: 'Line Rounded Icons', sans-serif;
    font-size: 20px;
}

.icon-font-item.line-square-icon {
    font-family: 'Line Square Icons', sans-serif;
    font-size: 20px;
}

.icon-font-item.filled-icons {
    font-family: 'Filled Icons', sans-serif;
    font-size: 20px;
}

/* Style components wrapper override */
.style---components-wrapper {
    background-color: var(--neutral-600);
    border-radius: 24px;
}

.style---bg-light {
    color: var(--neutral-100);
    padding: 48px;
}

/* Usage Rules Section */
.usage-rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.usage-rule-card {
    background-color: var(--neutral-700);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--neutral-600);
    transition: transform 0.3s, box-shadow 0.3s;
}

.usage-rule-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.usage-rule-card.do {
    border-left: 4px solid var(--green-300);
}

.usage-rule-card.do .usage-rule-icon {
    color: var(--green-300);
}

.usage-rule-card.dont {
    border-left: 4px solid var(--red-300);
}

.usage-rule-card.dont .usage-rule-icon {
    color: var(--red-300);
}

.usage-rule-card.info {
    border-left: 4px solid var(--accent-1);
}

.usage-rule-card.info .usage-rule-icon {
    color: var(--accent-1);
}

.usage-rule-icon {
    font-size: 24px;
    margin-bottom: 12px;
}

.usage-rule-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--neutral-100);
}

.usage-rule-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--neutral-400);
}

/* Footer improvements */
.footer-top {
    display: grid;
    grid-template-columns: 1.5fr repeat(4, 1fr);
    gap: 40px;
}

@media (max-width: 991px) {
    .footer-top {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .footer-top {
        grid-template-columns: 1fr;
    }
    
    .usage-rules-grid {
        grid-template-columns: 1fr;
    }
}