:root {
    --bg-primary: #0f0f1f;
    --bg-secondary: #16162e;
    --bg-gradient-start: #0f0f1a;
    --bg-gradient-mid: #181830;
    --bg-gradient-end: #12122a;
    --text-primary: #fff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --input-bg: rgba(255, 255, 255, 0.08);
    --accent: #8b5cf6;
    --accent-glow: rgba(139, 92, 246, 0.4);
    --gradient-1: #667eea;
    --gradient-2: #764ba2;
    --gradient-3: #f093fb;
}

[data-theme="light"] {
    --bg-primary: #f0f4ff;
    --bg-secondary: #e0e7ff;
    --bg-gradient-start: #e8ecff;
    --bg-gradient-mid: #f5f7ff;
    --bg-gradient-end: #eef2ff;
    --text-primary: #1e1b4b;
    --text-secondary: #4338ca;
    --text-muted: #6366f1;
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-border: rgba(99, 102, 241, 0.2);
    --input-bg: rgba(255, 255, 255, 0.9);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(160deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 20px var(--accent-glow));
}

.logo-text {
    font-weight: 800;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

nav a:hover,
nav a.active {
    color: var(--text-primary);
}

nav a.active {
    font-weight: 600;
}

.header-controls {
    display: flex;
    gap: 10px;
}

.control-btn {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 10px 16px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.control-btn:hover {
    background: var(--input-bg);
    transform: translateY(-2px);
    text-decoration: none;
}

a.control-btn {
    text-decoration: none !important;
}

/* Hero */
.hero {
    text-align: center;
    padding: 40px 20px 50px;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.hero h1 .gradient {
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(30px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.content {
    background: var(--card-bg);
    backdrop-filter: blur(30px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 40px;
    margin-bottom: 30px;
}

.content h2 {
    font-size: 1.4rem;
    margin: 30px 0 15px;
    color: var(--text-primary);
}

.content h2:first-child {
    margin-top: 0;
}

.content p,
.content li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.content ul {
    padding-left: 25px;
}

.content a {
    color: var(--accent);
    text-decoration: none;
}

.content a:hover {
    text-decoration: underline;
}

/* Features grid for About page */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.feature {
    background: var(--input-bg);
    border-radius: 16px;
    padding: 25px;
    text-align: center;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.feature h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* Contact cards */
.contact-card {
    background: var(--input-bg);
    border-radius: 16px;
    padding: 25px;
    margin: 15px 0;
}

.contact-card h3 {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-card p {
    color: var(--text-secondary);
    margin: 5px 0;
}

.contact-card a {
    color: var(--accent);
    text-decoration: none;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* ===== ABOUT PAGE STYLES ===== */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(30px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 35px;
    margin-bottom: 40px;
}

.about-card {
    margin-bottom: 50px;
}

.about-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.about-emoji {
    font-size: 2.5rem;
}

.about-header h2 {
    font-size: 1.6rem;
    margin: 0;
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.section-title {
    font-size: 1.5rem;
    margin: 50px 0 25px;
    text-align: center;
}

.tools-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.tool-showcase-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.tool-showcase-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px var(--accent-glow);
}

.tool-icon-large {
    font-size: 3rem;
    margin-bottom: 15px;
    filter: drop-shadow(0 5px 15px var(--accent-glow));
}

.tool-showcase-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tool-showcase-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.advantage-item {
    display: flex;
    gap: 15px;
    padding: 25px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    transition: all 0.2s;
}

.advantage-item:hover {
    border-color: var(--accent);
    transform: translateX(5px);
}

.advantage-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.advantage-item strong {
    display: block;
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.advantage-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.5;
}

.contacts-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.contact-box {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 25px;
    background: linear-gradient(135deg, var(--card-bg), rgba(139, 92, 246, 0.1));
    border: 1px solid var(--card-border);
    border-radius: 16px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s;
}

.contact-box:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(139, 92, 246, 0.2);
}

.contact-icon {
    font-size: 2rem;
}

.contact-box strong {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.contact-box p {
    margin: 0;
    font-size: 1rem;
    color: var(--accent);
}

.legal-section {
    text-align: center;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 16px;
    margin-bottom: 30px;
}

.legal-section a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.legal-section a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {

    .tools-showcase,
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .contacts-row {
        grid-template-columns: 1fr;
    }

    .about-header {
        flex-direction: column;
        text-align: center;
    }
}

/* Form elements */
textarea {
    width: 100%;
    min-height: 150px;
    padding: 20px;
    font-size: 1.1rem;
    background: var(--input-bg);
    border: 2px solid transparent;
    border-radius: 16px;
    color: var(--text-primary);
    resize: vertical;
    transition: all 0.3s;
    line-height: 1.6;
}

textarea::placeholder {
    color: var(--text-muted);
}

textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.btn-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.btn {
    padding: 16px 32px;
    border: none;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px var(--accent-glow);
}

.btn-secondary {
    background: var(--input-bg);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

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

/* Result */
.result {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 16px;
    padding: 20px;
    min-height: 120px;
    margin-top: 20px;
    color: #34d399;
    white-space: pre-wrap;
    word-break: break-all;
    font-size: 1rem;
    line-height: 1.6;
}

.result.empty {
    color: var(--text-muted);
    background: var(--input-bg);
    border-color: var(--card-border);
}

/* Platform Limits Grid */
.limits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-top: 20px;
}

.limits-category {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 25px;
}

.limits-category h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--card-border);
}

.limit-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.limit-item:last-child {
    border-bottom: none;
}

.limit-name {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.limit-value {
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .limits-grid {
        grid-template-columns: 1fr;
    }
}

/* Info section */
.info-section {
    margin-top: 50px;
}

.info-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 20px;
}

.info-card h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

/* Footer */
footer {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--card-border);
    margin-top: 60px;
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
}

footer a:hover {
    color: var(--accent);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    color: #fff;
    padding: 16px 32px;
    border-radius: 16px;
    font-weight: 600;
    transition: transform 0.3s;
    z-index: 1000;
    box-shadow: 0 10px 30px var(--accent-glow);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 1.8rem;
        flex-direction: column;
        gap: 10px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .header-controls {
        margin-top: 10px;
    }

    .content {
        padding: 25px;
    }
}

/* ===== PORTAL STYLES ===== */

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-bottom: 50px;
}

.category-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 35px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    opacity: 0;
    transition: opacity 0.3s;
}

.category-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: 0 25px 50px var(--accent-glow);
}

.category-card:hover::before {
    opacity: 0.1;
}

.category-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    position: relative;
}

.category-card h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    position: relative;
}

.category-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 15px;
    position: relative;
}

.tool-count {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    position: relative;
}

/* Popular Tools */
.popular-tools {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 50px;
}

.popular-tool {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
}

.popular-tool:hover {
    border-color: var(--accent);
    transform: translateX(5px);
}

.tool-emoji {
    font-size: 2rem;
}

.popular-tool strong {
    display: block;
    font-size: 1rem;
}

.popular-tool span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Portal Features */
.portal-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    padding: 40px;
    background: var(--card-bg);
    border-radius: 24px;
    margin-bottom: 50px;
}

.portal-feature {
    display: flex;
    align-items: center;
    gap: 15px;
    text-align: left;
}

.portal-feature span:first-child {
    font-size: 2.5rem;
}

.portal-feature strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.portal-feature p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* Tools Grid (for category pages) */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.tool-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s;
}

.tool-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 15px 40px var(--accent-glow);
}

.tool-card-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.tool-card-info h3 {
    font-size: 1.15rem;
    margin-bottom: 5px;
}

.tool-card-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.4;
}

/* Breadcrumbs */
.breadcrumbs {
    margin-bottom: 30px;
    padding: 15px 20px;
    background: var(--card-bg);
    border-radius: 12px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
}

.breadcrumbs a:hover {
    color: var(--accent);
}

/* Mega Menu */
.mega-menu {
    position: relative;
}

.mega-menu-trigger {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}

.mega-menu-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 20px;
    min-width: 600px;
    display: none;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    z-index: 1000;
}

.mega-menu:hover .mega-menu-dropdown {
    display: grid;
}

.mega-menu-category h4 {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mega-menu-category a {
    display: block;
    padding: 8px 0;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.mega-menu-category a:hover {
    color: var(--accent);
}

/* Active menu states */
.mega-menu-trigger.active>span {
    color: var(--accent);
    font-weight: 600;
}

.mega-menu-category.active {
    background: rgba(139, 92, 246, 0.1);
    border-radius: 12px;
    padding: 15px;
    margin: -10px;
}

.mega-menu-category.active h4 {
    color: var(--accent);
}

/* Portal Responsive */
@media (max-width: 900px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }

    .popular-tools {
        grid-template-columns: repeat(2, 1fr);
    }

    .portal-features {
        grid-template-columns: 1fr;
    }

    .mega-menu-dropdown {
        display: none !important;
    }
}

@media (max-width: 600px) {
    .popular-tools {
        grid-template-columns: 1fr;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Ad Banners ===== */
.ad-banner-container {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    max-width: 600px;
    width: calc(100% - 40px);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    visibility: hidden; /* Hidden by default to prevent flash */
}

.ad-banner-container.visible {
    visibility: visible;
}

.ad-banner-wrapper {
    position: relative;
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.ad-banner-close {
    position: absolute;
    top: 8px;
    right: 12px;
    background: rgba(0, 0, 0, 0.3);
    border: none;
    color: #fff;
    font-size: 16px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    transition: background 0.2s;
}

.ad-banner-close:hover {
    background: rgba(0, 0, 0, 0.5);
}

.ad-banner-slider {
    position: relative;
}

.ad-banner {
    display: none;
    color: #fff;
    text-decoration: none;
    padding: 16px 20px;
    padding-right: 50px;
}

.ad-banner:first-child {
    display: flex;
}

.ad-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.ad-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.ad-text strong {
    font-size: 1rem;
    font-weight: 700;
}

.ad-text span {
    font-size: 0.85rem;
    opacity: 0.9;
}

.ad-btn {
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: transform 0.2s, box-shadow 0.2s;
}

.ad-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.ad-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 0;
}

.ad-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}

.ad-dot:hover {
    background: rgba(255, 255, 255, 0.7);
}

.ad-dot.active {
    background: #fff;
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .ad-content {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .ad-text strong {
        font-size: 0.9rem;
    }

    .ad-text span {
        font-size: 0.8rem;
    }

    .ad-btn {
        padding: 8px 20px;
        font-size: 0.85rem;
    }

    .ad-banner {
        padding: 12px 15px;
        padding-right: 40px;
    }
}