/* ============================================
   COMPONENTS - Reusable UI Elements
   ============================================ */

/* ===================
   HEADER / NAVIGATION
   =================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-subtle);
    transition: background var(--duration-normal) var(--ease-default),
        box-shadow var(--duration-normal) var(--ease-default);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
}

.header__logo-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.header__logo-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.header__nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) var(--ease-default);
    position: relative;
}

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

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary-600);
    transition: width var(--duration-fast) var(--ease-default);
}

.header__nav-link:hover::after,
.header__nav-link.active::after {
    width: 100%;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Mobile menu toggle */
.header__menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: background var(--duration-fast) var(--ease-default);
}

.header__menu-toggle:hover {
    background: var(--color-bg-muted);
}

.header__menu-toggle svg {
    width: 24px;
    height: 24px;
}

/* Mobile navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    padding: var(--space-6);
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-normal) var(--ease-default),
        visibility var(--duration-normal) var(--ease-default);
}

.mobile-nav.open {
    opacity: 1;
    visibility: visible;
}

.mobile-nav__link {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border);
}

@media (max-width: 768px) {
    .header__nav {
        display: none;
    }

    .header__menu-toggle {
        display: flex;
    }

    .mobile-nav {
        display: block;
    }
}

/* ===================
   BUTTONS
   =================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
    transition: all var(--duration-fast) var(--ease-default);
    white-space: nowrap;
}

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

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

.btn--primary:active {
    transform: translateY(0);
}

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

.btn--secondary:hover {
    background: var(--color-bg-muted);
    border-color: var(--color-neutral-300);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn--ghost:hover {
    background: var(--color-bg-muted);
    color: var(--color-text-primary);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
}

.btn--sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn svg {
    width: 18px;
    height: 18px;
}

/* ===================
   CARDS
   =================== */

.card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    border: 1px solid var(--color-border);
    transition: all var(--duration-normal) var(--ease-default);
}

.card:hover {
    border-color: var(--color-neutral-300);
    box-shadow: var(--shadow-lg);
}

.card--elevated {
    border: none;
    box-shadow: var(--shadow-md);
}

.card--elevated:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.card--feature {
    text-align: center;
    padding: var(--space-10);
}

.card__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-6);
    background: var(--color-primary-50);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card__icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary-600);
}

.card__title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-3);
}

.card__description {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

/* Audience cards */
.card--audience {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.card--audience::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--duration-fast) var(--ease-default);
}

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

/* ===================
   SECTION HEADERS
   =================== */

.section-header {
    max-width: 640px;
    margin: 0 auto var(--space-12);
    text-align: center;
}

.section-header__overline {
    display: inline-block;
    margin-bottom: var(--space-4);
}

.section-header__title {
    margin-bottom: var(--space-4);
}

.section-header__description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

/* ===================
   FOOTER
   =================== */

.footer {
    background: var(--color-neutral-900);
    color: var(--color-neutral-300);
    padding-top: var(--space-16);
    padding-bottom: var(--space-8);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer__brand {
    max-width: 280px;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-text-inverse);
    margin-bottom: var(--space-4);
}

.footer__tagline {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--color-neutral-400);
}

.footer__heading {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-inverse);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-bottom: var(--space-4);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer__link {
    font-size: var(--text-sm);
    color: var(--color-neutral-400);
    transition: color var(--duration-fast) var(--ease-default);
}

.footer__link:hover {
    color: var(--color-text-inverse);
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-neutral-800);
}

.footer__copyright {
    font-size: var(--text-sm);
    color: var(--color-neutral-500);
}

.footer__social {
    display: flex;
    gap: var(--space-4);
}

.footer__social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--color-neutral-800);
    transition: background var(--duration-fast) var(--ease-default);
}

.footer__social-link:hover {
    background: var(--color-neutral-700);
}

.footer__social-link svg {
    width: 20px;
    height: 20px;
    color: var(--color-neutral-400);
}

@media (max-width: 768px) {
    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }

    .footer__brand {
        grid-column: span 2;
        max-width: none;
        margin-bottom: var(--space-4);
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}

/* ===================
   BADGES & PILLS
   =================== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
    background: var(--color-primary-50);
    color: var(--color-primary-700);
}

.badge--success {
    background: #D1FAE5;
    color: #065F46;
}

.badge--neutral {
    background: var(--color-neutral-100);
    color: var(--color-neutral-700);
}

/* ===================
   STEP INDICATORS
   =================== */

.steps {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.step {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.step__number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-primary-600);
    background: var(--color-primary-50);
    border-radius: var(--radius-full);
}

.step__line {
    width: 60px;
    height: 2px;
    background: var(--color-border);
}

@media (max-width: 768px) {
    .steps {
        flex-direction: column;
        align-items: flex-start;
    }

    .step__line {
        display: none;
    }
}

/* ===================
   APP PREVIEW
   =================== */

.app-preview {
    position: relative;
    max-width: 320px;
    margin: 0 auto;
}

.app-preview__phone {
    position: relative;
    background: var(--color-neutral-900);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-2xl);
}

.app-preview__screen {
    border-radius: 32px;
    overflow: hidden;
    background: var(--color-bg);
}

.app-preview__screen img {
    width: 100%;
    height: auto;
}

/* Glow effect */
.app-preview::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(ellipse, rgba(79, 70, 229, 0.15) 0%, transparent 70%);
    z-index: -1;
}