/* ===== Theme Variables ===== */

:root {
    /* ===== Primary Colors ===== */
    --color-primary: #1d4ed8;
    --color-primary-dark: #1e3a8a;

    /* ===== Backgrounds ===== */
    --color-bg-main: #f6f8fb;
    --color-bg-white: #ffffff;
    --color-bg-light: #eef2f7;

    /* ===== Text ===== */
    --color-text-main: #0f172a;
    --color-text-muted: #475569;
    --color-text-light: #334155;

    /* ===== Borders ===== */
    --color-border: #dbe3ee;

    /* ===== Buttons ===== */
    --color-btn-primary-bg: #0f172a;
    --color-btn-primary-text: #ffffff;

    --color-btn-secondary-border: rgba(255, 255, 255, 0.75);
    --color-btn-secondary-text: #ffffff;

    /* ===== Hero Gradient ===== */
    --color-hero-start: #0f172a;
    --color-hero-end: #1e3a8a;

    /* ===== Hero Text ===== */
    --color-hero-text: #ffffff;
    --color-hero-text-muted: rgba(255, 255, 255, 0.82);

    /* ===== Premium Accent ===== */
    --color-accent: #c8a96b;
    --color-accent-soft: #f4ead7;

    /* ===== Shadows ===== */
    --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.06);
    --shadow-card-hover: 0 14px 36px rgba(15, 23, 42, 0.10);
}

[data-theme="dark"] {
    /* ===== Primary Colors ===== */
    --color-primary: #7cb3ff;
    --color-primary-dark: #3b82f6;

    /* ===== Backgrounds ===== */
    --color-bg-main: #081120;
    --color-bg-white: #0f1b2d;
    --color-bg-light: #162338;

    /* ===== Text ===== */
    --color-text-main: #edf2f7;
    --color-text-muted: #a9b7c9;
    --color-text-light: #d6dfeb;

    /* ===== Borders ===== */
    --color-border: #22324a;

    /* ===== Buttons ===== */
    --color-btn-primary-bg: #edf2f7;
    --color-btn-primary-text: #0f172a;

    --color-btn-secondary-border: rgba(237, 242, 247, 0.7);
    --color-btn-secondary-text: #edf2f7;

    /* ===== Hero Gradient ===== */
    --color-hero-start: #0d1f3c;
    --color-hero-end: #1a3a6e;

    /* ===== Hero Text ===== */
    --color-hero-text: #f0f6ff;
    --color-hero-text-muted: rgba(220, 235, 255, 0.82);

    /* ===== Premium Accent ===== */
    --color-accent: #d4b06a;
    --color-accent-soft: rgba(212, 176, 106, 0.12);

    /* ===== Shadows ===== */
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.28);
    --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.34);
}

/* ===== Reset & Base ===== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text-main);
    background-color: var(--color-bg-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

/* ===== Header ===== */

.site-header {
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 300;
}

[data-theme="dark"] .site-header {
    background: rgba(15, 27, 45, 0.95);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.main-nav ul {
    display: flex;
    gap: 20px;
}

.main-nav a {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.main-nav a:hover {
    color: var(--color-primary);
}

/* ===== Header actions (theme toggle + hamburger) ===== */
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ===== Hamburger button ===== */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    cursor: pointer;
    padding: 7px 8px;
    transition: border-color 0.15s;
}
.nav-toggle:hover { border-color: var(--color-primary); }

.nav-toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text-main);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.2s ease;
}

/* Hamburger → X when open */
.nav-open .nav-toggle .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle .nav-toggle-bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-open .nav-toggle .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */

.hero-section {
    background: linear-gradient(135deg, var(--color-hero-start), var(--color-hero-end));
    color: var(--color-hero-text);
    padding: 80px 0;
}

.hero-content {
    max-width: 700px;
}

.eyebrow {
    text-transform: uppercase;
    font-size: 0.8rem;
    margin-bottom: 10px;
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 0.08em;
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: var(--color-hero-text-muted);
}

.hero-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */

.btn {
    padding: 11px 20px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    display: inline-block;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--color-btn-primary-bg);
    color: var(--color-btn-primary-text);
    box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: #ffffff;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: rgba(255,255,255,0.12);
}

/* ===== Sections ===== */

section {
    padding: 60px 0;
}

.section-header {
    max-width: 700px;
    margin-bottom: 30px;
}

.section-header h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.section-header p {
    color: var(--color-text-muted);
}

/* ===== Tool Grid ===== */

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.tool-card {
    background: var(--color-bg-white);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease;
}

.tool-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.tool-card h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.tool-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 15px;
}

.tool-link {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 600;
}

.tool-link:hover {
    color: var(--color-accent);
}

/* ===== Tool Lists ===== */

.tools-list-wrapper {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.tools-list h3 {
    margin-bottom: 10px;
}

.tools-list ul li {
    margin-bottom: 8px;
    color: var(--color-text-light);
}

.tools-list a {
    color: var(--color-primary);
}

/* ===== Categories ===== */

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.category-card {
    background: var(--color-bg-white);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.category-card h3 {
    margin-bottom: 10px;
}

.category-card li {
    margin-bottom: 6px;
    color: var(--color-text-muted);
}

/* ===== Benefits ===== */

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.benefit-card {
    background: var(--color-bg-white);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.benefit-card h3 {
    margin-bottom: 10px;
}

/* ===== FAQ ===== */

.faq-item {
    margin-bottom: 20px;
}

.faq-item h3 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.faq-item p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ===== CTA ===== */

.cta-box {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-hero-end));
    color: var(--color-bg-white);
    padding: 44px;
    border-radius: 18px;
    text-align: center;
    box-shadow: var(--shadow-card-hover);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.cta-box h2 {
    margin-bottom: 10px;
}

.cta-box p {
    margin-bottom: 20px;
}

/* ===== Footer ===== */

.site-footer {
    background: var(--color-bg-white);
    border-top: 1px solid var(--color-border);
    padding: 20px 0;
    margin-top: 40px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-nav {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.footer-nav a {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-nav a:hover {
    color: var(--color-primary);
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-light);
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.tool-card,
.category-card,
.benefit-card {
    background: var(--color-bg-white);
    padding: 20px;
    border-radius: 14px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    transition: all 0.25s ease;
}

.tool-card:hover,
.category-card:hover,
.benefit-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
}

/* ===== Responsive ===== */

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    /* Show hamburger, hide desktop nav */
    .nav-toggle { display: flex; }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg-white);
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.10);
        padding: 8px 0 16px;
    }

    /* Open state */
    .nav-open .main-nav { display: block; }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
        padding: 0;
    }

    .main-nav li { border-bottom: 1px solid var(--color-border); }
    .main-nav li:last-child { border-bottom: none; }

    .main-nav a {
        display: block;
        padding: 13px 24px;
        font-size: 0.97rem;
        font-weight: 500;
    }

    .main-nav a:hover {
        background: var(--color-bg-light);
    }

    .theme-toggle {
        font-size: 0.8rem;
        padding: 7px 10px;
    }

    .footer-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}