@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* --- DESIGN SYSTEM TOKENS --- */
:root {
    --font-primary: 'Plus Jakarta Sans', sans-serif;
    
    /* Light Theme Palette - Highly refined Indigo / Slate */
    --bg-main: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-glass: rgba(255, 255, 255, 0.7);
    --border-color: #e2e8f0;
    --border-glass: rgba(226, 232, 240, 0.8);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;
    --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    
    --accent: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.15);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s ease;
}

[data-theme="dark"] {
    /* Dark Theme Palette - Ultra-premium space slate with glowing borders */
    --bg-main: #090d16;
    --bg-surface: #111827;
    --bg-surface-glass: rgba(17, 24, 39, 0.7);
    --border-color: #1f2937;
    --border-glass: rgba(31, 41, 55, 0.6);
    
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #1e1b4b;
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    
    --accent: #22d3ee;
    --accent-gradient: linear-gradient(135deg, #22d3ee 0%, #06b6d4 100%);
    
    --success: #10b981;
    --success-light: #064e3b;
    --warning: #fbbf24;
    --danger: #f87171;
    --danger-light: #7f1d1d;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);
}

/* --- RESET & GLOBAL STYLES --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

/* --- SCROLLBAR --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* --- STRUCTURE LAYOUT --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

.header {
    background-color: var(--bg-surface-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.4rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.025em;
}

.logo svg {
    stroke: url(#indigo-violet-grad); /* To be dynamically handled or standard colored svg */
    width: 1.75rem;
    height: 1.75rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
}

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

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

/* --- THEME TOGGLE BUTTON --- */
.theme-toggle {
    cursor: pointer;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: var(--border-glass);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.theme-toggle:hover {
    color: var(--primary);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
}

.theme-toggle .sun-icon {
    display: none;
}

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

[data-theme="dark"] .theme-toggle .sun-icon {
    display: block;
}

/* --- FOOTER --- */
.footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    margin-top: auto;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

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

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1rem;
    font-size: 0.95rem;
    max-width: 320px;
}

.footer-heading {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-link:hover {
    color: var(--primary);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* --- CORE CARDS & HERO SECTION --- */
.hero {
    padding: 4rem 0 3rem;
    text-align: center;
    background: radial-gradient(circle at top, var(--primary-light) 0%, transparent 60%);
    transition: background var(--transition-normal);
}

[data-theme="dark"] .hero {
    background: radial-gradient(circle at top, rgba(99, 102, 241, 0.08) 0%, transparent 60%);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 1rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.hero-title span {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 2rem;
}

/* --- PREMIUM UI GLASS-CARDS --- */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal), background-color var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: var(--primary);
}

.card-glass {
    background-color: var(--bg-surface-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-lg);
}

/* --- FORM & INPUT ELEMENTS --- */
.form-group {
    margin-bottom: 1.5rem;
}

.label-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.input-val-display {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
    background-color: var(--primary-light);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

[data-theme="dark"] .input-val-display {
    background-color: rgba(99, 102, 241, 0.15);
}

.input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.input-field {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-surface);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1.05rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-field:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
}

.input-prefix, .input-suffix {
    position: absolute;
    color: var(--text-muted);
    font-weight: 600;
}

.input-prefix {
    left: 1rem;
}

.input-suffix {
    right: 1rem;
}

.input-with-prefix {
    padding-left: 2.2rem;
}

.input-with-suffix {
    padding-right: 2.5rem;
}

/* --- EXTREMELY TACTILE SLIDER STYLING --- */
.slider-container {
    margin-top: 0.75rem;
}

.custom-range-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 9999px;
    background: var(--border-color);
    outline: none;
    margin: 1rem 0;
    transition: background var(--transition-fast);
}

[data-theme="dark"] .custom-range-slider {
    background: var(--border-color);
}

.custom-range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-surface);
    cursor: pointer;
    box-shadow: var(--shadow-md), 0 0 0 0px rgba(79, 70, 229, 0.2);
    transition: transform 0.1s, box-shadow var(--transition-fast);
}

.custom-range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-lg), 0 0 0 8px rgba(79, 70, 229, 0.15);
}

.custom-range-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-surface);
    cursor: pointer;
    box-shadow: var(--shadow-md), 0 0 0 0px rgba(79, 70, 229, 0.2);
    transition: transform 0.1s, box-shadow var(--transition-fast);
}

.custom-range-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-lg), 0 0 0 8px rgba(79, 70, 229, 0.15);
}

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    border: none;
    box-shadow: var(--shadow-md), 0 4px 10px rgba(79, 70, 229, 0.2);
}

.btn-primary:hover {
    box-shadow: var(--shadow-lg), 0 6px 16px rgba(79, 70, 229, 0.35);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background-color: var(--border-glass);
    border-color: var(--text-muted);
}

/* --- SEO ACCORDION / FAQ COMPONENT --- */
.seo-section {
    margin: 5rem 0 3rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.seo-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-align: center;
}

.seo-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.75;
    margin-bottom: 2rem;
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.faq-item {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-fast), background-color var(--transition-normal);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    user-select: none;
    color: var(--text-primary);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    color: var(--text-secondary);
    transition: padding var(--transition-normal), max-height var(--transition-normal);
    font-size: 1rem;
    border-top: 0px solid transparent;
}

.faq-item.active {
    border-color: var(--primary);
}

.faq-item.active .faq-answer {
    padding: 1.25rem 1.5rem;
    max-height: 300px;
    border-top: 1px solid var(--border-color);
}

.faq-chevron {
    transition: transform var(--transition-normal);
    width: 1.25rem;
    height: 1.25rem;
    stroke: var(--text-secondary);
}

.faq-item.active .faq-chevron {
    transform: rotate(180deg);
    stroke: var(--primary);
}

/* --- MOBILE RESPONSIVE ADAPTATIONS --- */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .footer-brand {
        text-align: center;
    }
    .footer-brand p {
        margin: 1rem auto 0;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 0 1rem;
    }
    .hero {
        padding: 3rem 0 2rem;
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-description {
        font-size: 1rem;
    }
    .card {
        padding: 1.25rem;
    }
    .nav-menu {
        display: none; /* Add dynamic mobile menu icon & JS toggle if needed */
    }
}

/* --- CLICKABLE TOOL CARDS --- */
.tool-card {
    cursor: pointer;
}

/* --- ADSENSE RESPONSIVE PLACEHOLDERS --- */
.adsense-ad-container {
    margin: 2rem auto;
    text-align: center;
    max-width: 1200px;
    width: 100%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.adsense-placeholder-box {
    background-color: var(--border-glass);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    width: 100%;
    max-width: 728px;
    min-height: 90px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.adsense-placeholder-label {
    text-transform: uppercase;
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
    display: block;
    color: var(--text-muted);
}