/* ==========================================================================
   BrightMinds Home Tuition Academy — Core Stylesheet
   Author: BrightMinds
   Contents:
     1.  CSS Variables (Design Tokens)
     2.  Reset & Base
     3.  Typography
     4.  Layout Helpers (container, section, grid)
     5.  Buttons
     6.  Navigation / Header
     7.  Hero
     8.  Trust Badges
     9.  Cards (feature, course, why-us, testimonial)
     10. Process / Steps
     11. Statistics
     12. Testimonials
     13. Gallery
     14. FAQ
     15. Contact
     16. Footer
     17. Floating Buttons / Sticky CTA / Popup / Back-to-top
     18. Utilities
   Note: Media queries live in responsive.css, keyframes in animations.css.
   ========================================================================== */

/* 1. ---------------------------------------------------------------- Tokens */
:root {
    /* Brand palette */
    --color-primary: #0F62FE;
    --color-primary-dark: #0043ce;
    --color-primary-light: #d0e2ff;
    --color-accent: #FFC107;
    --color-accent-dark: #e0a800;

    /* Neutrals */
    --color-white: #ffffff;
    --color-bg: #f4f6fb;         /* light gray background */
    --color-bg-alt: #eef1f8;
    --color-text: #1c2333;
    --color-text-soft: #4a5163;
    --color-muted: #7b8194;
    --color-border: #e4e8f1;

    /* Effects */
    --radius-card: 16px;
    --radius-btn: 12px;
    --radius-pill: 999px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
    --shadow-primary: 0 12px 28px rgba(15, 98, 254, 0.28);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.5);

    /* Typography */
    --font-heading: "Poppins", system-ui, sans-serif;
    --font-body: "Inter", system-ui, sans-serif;

    /* Spacing scale */
    --space-section: clamp(3.5rem, 8vw, 7rem);
    --container-max: 1200px;

    /* Motion */
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --transition: 0.35s var(--ease);
}

/* 2. ----------------------------------------------------------- Reset/Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: 90px; /* offset for sticky nav on anchor jumps */
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.65;
    font-size: 1rem;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

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

ul,
ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Focus visibility for keyboard users (accessibility) */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Skip link for screen readers / keyboard nav */
.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    z-index: 2000;
    background: var(--color-primary);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: 0 0 var(--radius-btn) 0;
}
.skip-link:focus {
    left: 0;
}

/* 3. ------------------------------------------------------------ Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

p { color: var(--color-text-soft); }

.text-accent { color: var(--color-primary); }

/* 4. --------------------------------------------------------- Layout helpers */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

.section {
    padding-block: var(--space-section);
}

.section--alt {
    background: var(--color-white);
}

.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 3rem;
}

.section-head .eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-pill);
    margin-bottom: 1rem;
}

.section-head p {
    margin-top: 0.75rem;
    font-size: 1.05rem;
}

.grid {
    display: grid;
    gap: 1.5rem;
}

/* 5. ---------------------------------------------------------------- Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.98rem;
    padding: 0.85rem 1.6rem;
    border-radius: var(--radius-btn);
    transition: transform var(--transition), box-shadow var(--transition),
                background var(--transition), color var(--transition);
    white-space: nowrap;
    will-change: transform;
}

.btn svg { width: 1.1em; height: 1.1em; }

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-primary);
}
.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 16px 34px rgba(15, 98, 254, 0.36);
}

.btn--accent {
    background: var(--color-accent);
    color: #26210a;
    box-shadow: 0 12px 28px rgba(255, 193, 7, 0.35);
}
.btn--accent:hover {
    background: var(--color-accent-dark);
    transform: translateY(-3px);
}

.btn--ghost {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(6px);
}
.btn--ghost:hover {
    background: #fff;
    color: var(--color-primary);
    transform: translateY(-3px);
}

.btn--outline {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
}
.btn--outline:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-3px);
}

.btn--block { width: 100%; }
.btn--lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* 6. -------------------------------------------------------- Navigation/Header */
.header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: background var(--transition), box-shadow var(--transition),
                border-color var(--transition);
}
/* .is-stuck class toggled by navbar.js on scroll */
.header.is-stuck {
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--color-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text);
}
.nav__logo-mark {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--color-primary), #4589ff);
    color: #fff;
    box-shadow: var(--shadow-primary);
}
.nav__logo-mark svg { width: 22px; height: 22px; }
.nav__logo b { color: var(--color-primary); }

.nav__menu {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav__link {
    position: relative;
    font-weight: 500;
    font-size: 0.96rem;
    color: var(--color-text-soft);
    padding: 0.5rem 0.85rem;
    border-radius: 8px;
    transition: color var(--transition), background var(--transition);
}
.nav__link::after {
    content: "";
    position: absolute;
    left: 0.85rem;
    right: 0.85rem;
    bottom: 0.25rem;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}
.nav__link:hover,
.nav__link.is-active {
    color: var(--color-primary);
}
.nav__link:hover::after,
.nav__link.is-active::after {
    transform: scaleX(1);
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Resources dropdown */
.nav__item--has-dropdown {
    position: relative;
}
.nav__dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: none;
    border: 0;
    cursor: pointer;
    font: inherit;
}
.nav__dropdown-toggle::after {
    display: none;
}
.nav__chevron {
    flex-shrink: 0;
    transition: transform var(--transition);
}
.nav__item--has-dropdown.is-open .nav__chevron,
.nav__item--has-dropdown:hover .nav__chevron {
    transform: rotate(180deg);
}
.nav__dropdown {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    min-width: 180px;
    padding: 0.45rem;
    margin: 0;
    list-style: none;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 40;
}
.nav__item--has-dropdown:hover .nav__dropdown,
.nav__item--has-dropdown:focus-within .nav__dropdown,
.nav__item--has-dropdown.is-open .nav__dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}
.nav__dropdown-link {
    display: block;
    padding: 0.65rem 0.9rem;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.94rem;
    color: var(--color-text-soft);
    transition: color var(--transition), background var(--transition);
}
.nav__dropdown-link:hover,
.nav__dropdown-link.is-active {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

/* Hamburger */
.nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    border-radius: 10px;
}
.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    margin-inline: auto;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* In-menu CTA (Book Demo + call/WhatsApp) is mobile-only.
   Hidden by default so it never shows in the desktop horizontal nav;
   responsive.css switches it to display:block inside the mobile menu. */
.nav__menu-cta { display: none; }

/* 7. ------------------------------------------------------------------- Hero */
.hero {
    position: relative;
    padding-top: 130px;
    padding-bottom: var(--space-section);
    overflow: hidden;
    background:
        radial-gradient(1000px 500px at 80% -10%, rgba(15, 98, 254, 0.12), transparent),
        radial-gradient(700px 400px at 0% 30%, rgba(255, 193, 7, 0.10), transparent),
        var(--color-bg);
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 3rem;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-soft);
    box-shadow: var(--shadow-sm);
}
.hero__badge .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: #16a34a;
}

.hero h1 {
    margin: 1.25rem 0 1rem;
}
.hero h1 .hl {
    color: var(--color-primary);
    position: relative;
}

.hero__sub {
    font-size: 1.12rem;
    max-width: 520px;
    margin-bottom: 1.8rem;
}

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-bottom: 1.8rem;
}

.hero__rating {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--color-text-soft);
}
.hero__stars { color: var(--color-accent); display: inline-flex; }
.hero__stars svg { width: 18px; height: 18px; }

/* Hero image */
.hero__media {
    position: relative;
}
.hero__media img {
    width: 100%;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    object-fit: cover;
    aspect-ratio: 4 / 4.4;
}
.hero__float {
    position: absolute;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 0.9rem 1.1rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 0.7rem;
}
.hero__float-icon {
    display: grid; place-items: center;
    width: 40px; height: 40px; border-radius: 10px;
    color: #fff;
}
.hero__float small { display: block; color: var(--color-muted); font-size: 0.72rem; }
.hero__float strong { font-family: var(--font-heading); font-size: 1.05rem; }
.hero__float--tl { top: 1.5rem; left: -1.2rem; }
.hero__float--br { bottom: 1.5rem; right: -1.2rem; }

/* 8. ----------------------------------------------------------- Trust badges */
.trust {
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}
.trust__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    padding-block: 2rem;
}
.trust__item {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    text-align: left;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 1rem 1.1rem;
    transition: transform var(--transition), box-shadow var(--transition),
                border-color var(--transition);
}
.trust__item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}
.trust__icon {
    display: grid; place-items: center;
    width: 52px; height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, #eaf1ff, var(--color-primary-light));
    color: var(--color-primary);
    flex-shrink: 0;
    box-shadow: 0 6px 16px rgba(15, 98, 254, 0.18),
                inset 0 1px 0 rgba(255, 255, 255, 0.7);
    transition: transform var(--transition);
}
.trust__item:hover .trust__icon { transform: translateY(-2px) scale(1.06); }
.trust__icon svg { width: 26px; height: 26px; }
.trust__item strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.98rem;
    color: var(--color-text);
}
.trust__item span { font-size: 0.8rem; color: var(--color-muted); }

/* 9. ------------------------------------------------------------------ Cards */
.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition),
                border-color var(--transition);
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

/* Icon feature card */
.feature-grid {
    grid-template-columns: repeat(3, 1fr);
}
.feature-card__icon {
    display: grid; place-items: center;
    width: 56px; height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--color-primary-light), #eaf1ff);
    color: var(--color-primary);
    margin-bottom: 1.1rem;
}
.feature-card__icon svg { width: 28px; height: 28px; }
.feature-card h3 { margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.95rem; }

/* Why-us small icon card */
.why-grid {
    grid-template-columns: repeat(4, 1fr);
}
.why-card {
    text-align: center;
    padding: 1.5rem 1.25rem;
}
.why-card__icon {
    display: grid; place-items: center;
    width: 54px; height: 54px;
    margin: 0 auto 0.9rem;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    transition: transform var(--transition), background var(--transition), color var(--transition);
}
.why-card:hover .why-card__icon {
    background: var(--color-primary);
    color: #fff;
    transform: rotate(-8deg) scale(1.08);
}
.why-card h3 { font-size: 1.05rem; }

/* 10. --------------------------------------------------------- Process/Steps */
.process {
    counter-reset: step;
}
.process__grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.25rem;
    position: relative;
}
.step {
    position: relative;
    text-align: center;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 2rem 1.1rem 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}
.step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.step__num {
    counter-increment: step;
    display: grid; place-items: center;
    width: 48px; height: 48px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: var(--shadow-primary);
}
.step__num::before { content: counter(step); }
.step h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
.step p { font-size: 0.88rem; }
/* Connector arrow between steps (desktop) */
.step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 46px;
    right: -0.75rem;
    width: 1.5rem;
    height: 2px;
    background: var(--color-primary-light);
}

/* 11. -------------------------------------------------------------- Statistics */
.stats {
    background:
        radial-gradient(700px 350px at 15% 0%, rgba(255,255,255,0.12), transparent),
        linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
}
.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    text-align: center;
}
.stat__num {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    line-height: 1;
    display: inline-flex;
    align-items: baseline;
}
.stat__num .suffix { color: var(--color-accent); }
.stat__label {
    margin-top: 0.5rem;
    font-size: 0.98rem;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.02em;
}

/* 12. ------------------------------------------------------------ Testimonials */
.testimonials__viewport {
    overflow: hidden;
    padding: 0.5rem;
}
.testimonials__track {
    display: flex;
    transition: transform 0.6s var(--ease);
}
.testimonial {
    flex: 0 0 100%;
    padding-inline: 0.5rem;
}
.testimonial__inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.review-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.review-card__stars { color: var(--color-accent); display: inline-flex; gap: 2px; }
.review-card__stars svg { width: 18px; height: 18px; }
.review-card__text {
    font-size: 0.98rem;
    color: var(--color-text-soft);
    flex-grow: 1;
}
.review-card__person {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}
.review-card__avatar {
    width: 46px; height: 46px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--color-primary-light);
}
.review-card__person strong { display: block; font-family: var(--font-heading); font-size: 0.95rem; }
.review-card__person span { font-size: 0.82rem; color: var(--color-muted); }

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}
.carousel-btn {
    display: grid; place-items: center;
    width: 46px; height: 46px;
    border-radius: 50%;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
    transition: background var(--transition), color var(--transition), transform var(--transition);
}
.carousel-btn:hover { background: var(--color-primary); color: #fff; transform: scale(1.05); }
.carousel-dots { display: flex; gap: 0.5rem; }
.carousel-dots button {
    width: 10px; height: 10px; border-radius: 50%;
    background: var(--color-border);
    transition: background var(--transition), width var(--transition);
}
.carousel-dots button.is-active { background: var(--color-primary); width: 26px; border-radius: 5px; }

/* 13. ---------------------------------------------------------------- Gallery */
.gallery-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 2.5rem;
}
.gallery-filter button {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-pill);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    color: var(--color-text-soft);
    transition: all var(--transition);
}
.gallery-filter button:hover { border-color: var(--color-primary); color: var(--color-primary); }
.gallery-filter button.is-active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.masonry {
    columns: 3;
    column-gap: 1.25rem;
}
.masonry__item {
    position: relative;
    break-inside: avoid;
    margin-bottom: 1.25rem;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.masonry__item img {
    width: 100%;
    transition: transform 0.6s var(--ease);
}
.masonry__item:hover img { transform: scale(1.08); }
.masonry__item figcaption {
    position: absolute;
    inset: auto 0 0 0;
    padding: 1.5rem 1rem 0.9rem;
    background: linear-gradient(transparent, rgba(11, 22, 50, 0.85));
    color: #fff;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--transition), transform var(--transition);
}
.masonry__item:hover figcaption { opacity: 1; transform: translateY(0); }

/* 14. -------------------------------------------------------------------- FAQ */
.faq {
    max-width: 820px;
    margin-inline: auto;
}
.faq__item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: box-shadow var(--transition), border-color var(--transition);
}
.faq__item.is-open {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}
.faq__question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    text-align: left;
    padding: 1.25rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.02rem;
    color: var(--color-text);
}
.faq__icon {
    flex-shrink: 0;
    display: grid; place-items: center;
    width: 30px; height: 30px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    transition: transform var(--transition), background var(--transition), color var(--transition);
}
.faq__item.is-open .faq__icon {
    background: var(--color-primary);
    color: #fff;
    transform: rotate(45deg);
}
.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease);
}
.faq__answer-inner {
    padding: 0 1.5rem 1.35rem;
    color: var(--color-text-soft);
    font-size: 0.97rem;
}

/* 15. ---------------------------------------------------------------- Contact */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 2.5rem;
    align-items: start;
}
.contact__info {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.contact__info-card {
    display: flex;
    gap: 1rem;
    align-items: center;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}
.contact__info-icon {
    display: grid; place-items: center;
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    flex-shrink: 0;
}
.contact__info-card strong { display: block; font-family: var(--font-heading); }
.contact__info-card a, .contact__info-card span { color: var(--color-text-soft); font-size: 0.95rem; }

/* Form */
.form {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}
.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.field {
    margin-bottom: 1.1rem;
    position: relative;
}
.field label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.88rem;
    margin-bottom: 0.4rem;
    color: var(--color-text);
}
.field label .req { color: #dc2626; }
.field input,
.field select,
.field textarea {
    width: 100%;
    font-family: inherit;
    font-size: 0.98rem;
    color: var(--color-text);
    padding: 0.8rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-btn);
    background: var(--color-bg);
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(15, 98, 254, 0.12);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea {
    border-color: #dc2626;
    background: #fff5f5;
}
.field__error {
    display: none;
    color: #dc2626;
    font-size: 0.8rem;
    margin-top: 0.35rem;
}
.field.has-error .field__error { display: block; }

.form__note {
    font-size: 0.82rem;
    color: var(--color-muted);
    text-align: center;
    margin-top: 0.9rem;
}
.form__success {
    display: none;
    align-items: center;
    gap: 0.6rem;
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #047857;
    padding: 0.9rem 1.1rem;
    border-radius: var(--radius-btn);
    margin-bottom: 1.2rem;
    font-size: 0.92rem;
    font-weight: 500;
}
.form__success.is-visible { display: flex; }

.map-embed {
    margin-top: 2.5rem;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    line-height: 0;
}
.map-embed iframe { width: 100%; height: 380px; border: 0; }

/* 16. ----------------------------------------------------------------- Footer */
.footer {
    background: #0b1020;
    color: #c3c9d9;
    padding-top: 4rem;
}
.footer__grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
}
.footer__brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: #fff;
    margin-bottom: 1rem;
}
.footer__brand .nav__logo-mark { box-shadow: none; }
.footer p { color: #98a1b8; font-size: 0.92rem; }
.footer__col h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 1.1rem;
}
.footer__col ul li { margin-bottom: 0.6rem; }
.footer__col a {
    color: #98a1b8;
    font-size: 0.92rem;
    transition: color var(--transition), padding-left var(--transition);
}
.footer__col a:hover { color: #fff; padding-left: 4px; }

.footer__social {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.2rem;
}
.footer__social a {
    display: grid; place-items: center;
    width: 40px; height: 40px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    transition: background var(--transition), transform var(--transition);
}
.footer__social a:hover { background: var(--color-primary); transform: translateY(-3px); }
.footer__social svg { width: 20px; height: 20px; }

.footer__newsletter form {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}
.footer__newsletter input {
    flex: 1;
    padding: 0.7rem 0.9rem;
    border-radius: var(--radius-btn);
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.06);
    color: #fff;
    font-family: inherit;
    font-size: 0.9rem;
}
.footer__newsletter input::placeholder { color: #6b7488; }

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-block: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}
.footer__bottom p { font-size: 0.86rem; }
.footer__legal { display: flex; gap: 1.25rem; }
.footer__legal a { font-size: 0.86rem; color: #98a1b8; }
.footer__legal a:hover { color: #fff; }

/* 17. ---------------------------- Floating buttons / Sticky CTA / Popup / Top */
.float-actions {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 900;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.float-btn {
    display: grid; place-items: center;
    width: 56px; height: 56px;
    border-radius: 50%;
    color: #fff;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition);
}
.float-btn:hover { transform: scale(1.1) translateY(-2px); }
.float-btn svg { width: 28px; height: 28px; }
.float-btn--whatsapp { background: #25D366; }
.float-btn--call { background: var(--color-primary); }

/* Back to top */
.back-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 890;
    display: grid; place-items: center;
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--color-text);
    color: #fff;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.back-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--color-primary); }

/* When back-to-top is visible we lift the float actions so they don't overlap */
body.show-top .float-actions { bottom: 5.25rem; }

/* Sticky bottom CTA bar (mobile) */
.sticky-cta {
    position: fixed;
    inset: auto 0 0 0;
    z-index: 880;
    display: none;
    gap: 0.6rem;
    padding: 0.7rem 0.9rem;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -6px 20px rgba(15,23,42,0.08);
}
.sticky-cta .btn { flex: 1; padding-block: 0.75rem; }

/* Inquiry / Demo popup modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1500;
    display: grid;
    place-items: center;
    padding: 1.25rem;
    background: rgba(11, 16, 32, 0.55);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}
.modal.is-open { opacity: 1; visibility: visible; }
.modal__dialog {
    position: relative;
    width: 100%;
    max-width: 460px;
    background: var(--color-white);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.98);
    transition: transform var(--transition);
    max-height: 90vh;
    overflow-y: auto;
}
.modal.is-open .modal__dialog { transform: translateY(0) scale(1); }
.modal__close {
    position: absolute;
    top: 1rem; right: 1rem;
    display: grid; place-items: center;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--color-bg);
    color: var(--color-text-soft);
    transition: background var(--transition), color var(--transition);
}
.modal__close:hover { background: var(--color-primary); color: #fff; }
.modal__badge {
    display: inline-block;
    background: var(--color-accent);
    color: #26210a;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-pill);
    margin-bottom: 0.75rem;
}
.modal__dialog h3 { font-size: 1.4rem; margin-bottom: 0.4rem; }
.modal__dialog > p { font-size: 0.95rem; margin-bottom: 1.25rem; }

/* 18. -------------------------------------------------------------- Utilities */
.cta-band {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    border-radius: 24px;
    padding: clamp(2rem, 5vw, 3.5rem);
    text-align: center;
    box-shadow: var(--shadow-lg);
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.9); max-width: 560px; margin: 0.75rem auto 1.75rem; }
.cta-band__btns { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }

/* Page hero (inner pages) */
.page-hero {
    padding-top: 130px;
    padding-bottom: 3rem;
    text-align: center;
    background:
        radial-gradient(700px 300px at 50% -20%, rgba(15, 98, 254, 0.12), transparent),
        var(--color-white);
    border-bottom: 1px solid var(--color-border);
}
.page-hero p { max-width: 620px; margin: 0.75rem auto 0; font-size: 1.05rem; }
.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-muted);
    margin-top: 1rem;
}
.breadcrumb a:hover { color: var(--color-primary); }

/* About specific */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}
.about__media img {
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4/3.4;
    object-fit: cover;
}
.about__list { margin-top: 1.5rem; display: grid; gap: 0.85rem; }
.about__list li { display: flex; gap: 0.7rem; align-items: flex-start; color: var(--color-text-soft); }
.about__list li svg { flex-shrink: 0; color: var(--color-primary); margin-top: 3px; }

.mv-grid { grid-template-columns: 1fr 1fr; }
.mv-card { position: relative; overflow: hidden; }
.mv-card__icon {
    display: grid; place-items: center;
    width: 56px; height: 56px;
    border-radius: 14px;
    margin-bottom: 1rem;
    color: #fff;
}
.mv-card--mission .mv-card__icon { background: linear-gradient(135deg, var(--color-primary), #4589ff); }
.mv-card--vision .mv-card__icon { background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark)); }

/* Courses specific */
.course-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 2.5rem;
}
.course-tabs button {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-pill);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    color: var(--color-text-soft);
    transition: all var(--transition);
}
.course-tabs button.is-active,
.course-tabs button:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.course-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0;
}
.course-card__media {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}
.course-card__media img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
}
.course-card:hover .course-card__media img { transform: scale(1.08); }
.course-card__tag {
    position: absolute;
    top: 0.9rem; left: 0.9rem;
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.78rem;
    padding: 0.35rem 0.8rem;
    border-radius: var(--radius-pill);
}
.course-card__body { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.course-card__body h3 { margin-bottom: 0.6rem; }
.course-card__subjects {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.25rem;
}
.course-card__subjects span {
    font-size: 0.78rem;
    padding: 0.28rem 0.7rem;
    border-radius: var(--radius-pill);
    background: var(--color-bg-alt);
    color: var(--color-text-soft);
}
.course-card__foot {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}
.course-card__foot .link {
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: gap var(--transition);
}
.course-card__foot .link:hover { gap: 0.6rem; }

.subject-grid { grid-template-columns: repeat(3, 1fr); }

/* Screen-reader-only */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}