/* ============================================
   VELOCEES PRO - Complete Stylesheet
   Professional Dark Theme | AdSense Ready
   ============================================ */

:root {
    --primary: #0f172a;
    --primary-light: #38bdf8;
    --secondary: #818cf8;
    --accent: #fbbf24;
    --bg: #020617;
    --bg-card: rgba(15, 23, 42, 0.7);
    --bg-card-solid: #0f172a;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: rgba(148, 163, 184, 0.15);
    --radius: 1rem;
    --radius-sm: 0.5rem;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo-icon {
    font-size: 1.75rem;
    filter: drop-shadow(0 0 12px rgba(251, 191, 36, 0.4));
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

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

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    border-radius: 2px;
}

nav a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumbs {
    padding-top: 90px;
    padding-bottom: 0.5rem;
    background: transparent;
}

.breadcrumbs ol {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.breadcrumbs a {
    color: var(--primary-light);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ============================================
   HERO SECTION (Homepage)
   ============================================ */
.hero {
    padding: 10rem 1.5rem 6rem;
    text-align: center;
    background: radial-gradient(ellipse at top, rgba(56, 189, 248, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at bottom, rgba(99, 102, 241, 0.06) 0%, transparent 60%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.03) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    color: var(--primary-light);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #f1f5f9 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   TOOL HERO (Tool Pages)
   ============================================ */
.tool-hero {
    padding: 10rem 1.5rem 3rem;
    text-align: center;
    background: radial-gradient(ellipse at top, rgba(56, 189, 248, 0.06) 0%, transparent 60%);
    border-bottom: 1px solid var(--border);
}

.tool-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.tool-hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   CONTAINER & SECTIONS
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(148, 163, 184, 0.3);
}

.btn-full {
    width: 100%;
}

/* ============================================
   CARDS & GRIDS
   ============================================ */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.3);
    box-shadow: var(--shadow);
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-light);
    margin-bottom: 1.25rem;
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

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

/* Article Cards */
.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.3);
    box-shadow: var(--shadow);
}

.article-image {
    height: 180px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    opacity: 0.9;
}

.article-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.article-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    flex: 1;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: 1rem;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--accent);
    gap: 0.75rem;
}

/* ============================================
   SEARCH BOX
   ============================================ */
.search-box {
    max-width: 600px;
    margin: 0 auto 2rem;
    display: flex;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.search-box input {
    flex: 1;
    background: none;
    border: none;
    padding: 1rem 1.25rem;
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    outline: none;
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-box button {
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: 0 1.5rem;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.search-box button:hover {
    filter: brightness(1.1);
}

/* ============================================
   FORMS & TOOLS
   ============================================ */
.tool-container {
    max-width: 700px;
    margin: 0 auto 3rem;
}

form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    backdrop-filter: blur(10px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
    accent-color: var(--primary-light);
}

/* ============================================
   RESULT BOXES
   ============================================ */
.result-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    margin-top: 1.5rem;
    backdrop-filter: blur(10px);
    display: none;
}

.result-box.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-box h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--primary-light);
}

/* Info / Warning / Success Boxes */
.info-box,
.warning-box,
.success-box {
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    margin: 1.5rem 0;
    font-size: 0.95rem;
    line-height: 1.7;
    border-left: 4px solid;
}

.info-box {
    background: rgba(56, 189, 248, 0.08);
    border-color: var(--primary-light);
    color: #bae6fd;
}

.warning-box {
    background: rgba(245, 158, 11, 0.08);
    border-color: var(--accent);
    color: #fde68a;
}

.success-box {
    background: rgba(34, 197, 94, 0.08);
    border-color: #22c55e;
    color: #bbf7d0;
}

/* ============================================
   ARTICLE PAGES
   ============================================ */
.article-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0 4rem;
}

.article-page h1 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.article-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.article-page h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem;
    color: var(--primary-light);
}

.article-page h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
}

.article-page p {
    margin-bottom: 1rem;
    color: #cbd5e1;
    line-height: 1.8;
}

.article-page ul {
    margin: 1rem 0 1.5rem 1.5rem;
}

.article-page ul li {
    margin-bottom: 0.75rem;
    color: #cbd5e1;
    line-height: 1.7;
}

.article-page a {
    color: var(--primary-light);
    text-decoration: underline;
    text-decoration-color: rgba(56, 189, 248, 0.3);
    transition: var(--transition);
}

.article-page a:hover {
    color: var(--accent);
    text-decoration-color: var(--accent);
}

/* ============================================
   FEATURED TOOL (Homepage)
   ============================================ */
.featured-tool {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
}

.featured-tool h2 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* ============================================
   STATS
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: rgba(56, 189, 248, 0.3);
    transform: translateY(-3px);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: rgba(2, 6, 23, 0.95);
    border-top: 1px solid var(--border);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--text);
}

.footer-section a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-light);
    padding-left: 0.25rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   ADSENSE PLACEHOLDER STYLES
   ============================================ */
.ad-container {
    background: rgba(15, 23, 42, 0.4);
    border: 1px dashed rgba(148, 163, 184, 0.2);
    border-radius: var(--radius-sm);
    padding: 1rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin: 1.5rem 0;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 968px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(2, 6, 23, 0.98);
        border-bottom: 1px solid var(--border);
        padding: 1rem;
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

    nav.active {
        transform: translateY(0);
    }

    nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    nav a {
        display: block;
        padding: 0.75rem;
        width: 100%;
    }

    .hero {
        padding: 8rem 1rem 4rem;
    }

    .tool-hero {
        padding: 8rem 1rem 2rem;
    }

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

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .section {
        padding: 3rem 0;
    }
}

@media (max-width: 480px) {
    .card,
    .article-card,
    form,
    .featured-tool {
        padding: 1.25rem;
    }

    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-2 { margin-bottom: 2rem; }