/* =============================================================
   NovAI Main CSS — Base styles, layout, components
   All colors use CSS vars defined in style.css
   ============================================================= */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: var(--leading-normal);
    font-size: var(--text-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--color-text);
}

a { color: var(--color-accent); text-decoration: none; transition: var(--transition-fast); }
a:hover { opacity: 0.85; }

img, video { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* Accessibility: skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    z-index: 9999;
    font-weight: var(--font-semi);
    transition: top 0.2s ease;
}
.skip-link:focus { top: var(--space-4); }

/* Screen reader only */
.screen-reader-text {
    clip: rect(1px,1px,1px,1px);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

/* --- Layout: Container --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-6);
}

/* --- Section Spacing --- */
.hero-section,
.trusted-by-section,
.demo-section,
.features-section,
.how-section,
.integrations-section,
.pricing-section,
.testimonials-section,
.faq-section,
.cta-banner-section { padding-block: var(--section-pad-mobile); }

/* --- Section Header --- */
.section-header { text-align: center; margin-bottom: var(--space-16); }

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: var(--color-accent-glow);
    border: 1px solid rgba(108,99,255,0.25);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
}

.section-sub {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 560px;
    margin-inline: auto;
    line-height: var(--leading-relaxed);
}

/* === NAVIGATION === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    transition: var(--transition-base);
}

/* When WordPress admin bar is present (logged-in users) */
.admin-bar .site-header { top: 32px; }

@media screen and (max-width: 782px) {
    .admin-bar .site-header { top: 46px; }
}

.site-header.scrolled {
    background: rgba(10,10,15,0.85);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

[data-theme="light"] .site-header.scrolled {
    background: rgba(250,250,255,0.88);
    border-bottom-color: #D0D0E4;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}

.nav-container { width: 100%; }

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
    gap: var(--space-4);
}

/* Logo */
.nav-logo { flex-shrink: 0; }

.site-name-link, .footer-logo-text {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-weight: var(--font-bold);
    font-size: var(--text-xl);
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.logo-icon {
    color: var(--color-accent);
    font-size: 1.4em;
    line-height: 1;
}

/* Nav Menu */
.nav-menu-wrap { flex: 1; display: flex; justify-content: center; }

.nav-menu { display: flex; align-items: center; gap: var(--space-1); list-style: none; }

.nav-menu li a {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-muted);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-menu li a:hover,
.nav-menu li.current-menu-item a {
    color: var(--color-text);
    background: var(--color-surface);
}

/* Nav Actions */
.nav-actions { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }

/* Dark mode toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-glow);
}

.icon-sun { display: none; }
.icon-moon { display: flex; }

[data-theme="light"] .icon-sun { display: flex; }
[data-theme="light"] .icon-moon { display: none; }

/* Hamburger (mobile only) */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: transparent;
    cursor: pointer;
    padding: 8px;
}

.hamburger-line {
    width: 18px;
    height: 1.5px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition-fast);
    display: block;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.625rem 1.25rem;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--font-semi);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--color-white);
    border-color: transparent;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    opacity: 1;
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-glow);
    transform: translateY(-2px);
}

.btn-ghost {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-ghost:hover {
    background: var(--color-surface-2);
    transform: translateY(-2px);
    opacity: 1;
}

.btn-sm { padding: 0.375rem 0.875rem; font-size: var(--text-xs); }
.btn-lg { padding: 0.875rem 1.75rem; font-size: var(--text-base); }
.btn-full { width: 100%; }

/* Shine effect on primary button */
.btn-shine {
    position: absolute;
    top: 0; left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transform: skewX(-20deg);
    transition: left 0.5s ease;
}

.btn-primary:hover .btn-shine { left: 150%; }