/* =========================================================
   HORIZON SCHOOL - MAIN CSS
   Advanced Responsive System
   Desktop layout preserved
   Mobile navigation redesigned
   ========================================================= */

:root {
    --primary: #0f6654;
    --primary-dark: #084a3c;
    --primary-soft: #eaf5f1;
    --secondary: #d7a947;

    --text: #1d2939;
    --muted: #667085;

    --white: #ffffff;
    --black: #000000;

    --border: #e4e7ec;
    --border-soft: #eef1f5;

    --soft: #f7f9fc;

    --shadow-xs: 0 1px 3px rgba(16, 24, 40, 0.06);
    --shadow-sm: 0 4px 14px rgba(16, 24, 40, 0.08);
    --shadow-md: 0 10px 30px rgba(16, 24, 40, 0.10);
    --shadow-lg: 0 18px 50px rgba(16, 24, 40, 0.14);

    --radius-sm: 7px;
    --radius-md: 10px;
    --radius-lg: 14px;

    --header-height: 86px;

    --transition-fast: 160ms ease;
    --transition: 220ms ease;
    --transition-slow: 320ms ease;
}

/* =========================================================
   RESET
   ========================================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Inter", Arial, sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

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

button,
input,
textarea,
select {
    font: inherit;
}

button {
    border: 0;
}

ul,
ol {
    list-style: none;
}

summary {
    list-style: none;
}

summary::-webkit-details-marker {
    display: none;
}

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

.site-header {
    width: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: relative;
    z-index: 1000;
}

.header-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 28px;
}

.header-top {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

/* =========================================================
   BRAND
   ========================================================= */

.site-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.site-logo {
    width: 58px;
    height: 58px;
    object-fit: contain;
}

.site-name {
    color: var(--primary);
    max-width: 240px;
    font-size: 16px;
    font-weight: 800;
    line-height: 1.2;
    white-space: normal;
    text-transform: uppercase;
    letter-spacing: .02em;
}

/* =========================================================
   HEADER ACTIONS
   ========================================================= */

.header-actions {
    display: flex;
    align-items: center;
    gap: 9px;
    flex-shrink: 0;
}

.header-action,
.header-login {
    min-height: 42px;
    padding: 9px 15px;
    border-radius: var(--radius-sm);

    display: inline-flex;
    align-items: center;
    justify-content: center;

    white-space: nowrap;

    font-size: 13px;
    font-weight: 700;

    border: 1px solid transparent;

    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        box-shadow var(--transition),
        transform var(--transition-fast);
}

.header-action:active,
.header-login:active {
    transform: translateY(1px);
}

.admission-btn {
    background: var(--primary);
    color: var(--white);
}

.admission-btn:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-xs);
}

.enquiry-btn {
    background: var(--primary-soft);
    border-color: #c8daf0;
    color: var(--primary);
}

.enquiry-btn:hover {
    background: #e3edf9;
}

.header-login {
    background: var(--white);
    border-color: #b9cce3;
    color: var(--primary);
}

.header-login:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

/* =========================================================
   DESKTOP NAVIGATION
   ========================================================= */

.main-navigation {
    width: 100%;
    border-top: 1px solid #f0f2f5;
}

.desktop-navigation {
    width: 100%;
    min-height: 52px;

    margin: 0;
    padding: 0;

    display: flex;
    align-items: center;
    justify-content: center;

    gap: 2px;
}

.desktop-navigation li {
    margin: 0;
    padding: 0;
    flex-shrink: 0;
}

.desktop-navigation a {
    display: flex;
    align-items: center;
    justify-content: center;

    min-height: 44px;
    padding: 8px 10px;

    border-radius: 6px;

    color: #263b55;

    font-size: 12px;
    font-weight: 650;

    white-space: nowrap;

    transition:
        background var(--transition),
        color var(--transition);
}

.desktop-navigation a:hover {
    color: var(--primary);
    background: #f3f6fa;
}

.desktop-navigation a.active {
    color: var(--primary);
    background: var(--primary-soft);
}

/* =========================================================
   MOBILE NAVIGATION
   Hidden on desktop
   ========================================================= */

.mobile-navigation {
    display: none;
}

/* =========================================================
   MOBILE MENU BUTTON
   ========================================================= */

.mobile-menu-button {
    display: none;

    width: 42px;
    height: 42px;

    align-items: center;
    justify-content: center;

    border: 1px solid var(--border);
    border-radius: var(--radius-sm);

    background: var(--white);
    color: var(--primary);

    cursor: pointer;

    font-size: 21px;
    line-height: 1;

    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        box-shadow var(--transition),
        transform var(--transition-fast);
}

.mobile-menu-button:hover {
    background: var(--primary-soft);
    border-color: #c8daf0;
}

.mobile-menu-button:active {
    transform: scale(0.96);
}

/* =========================================================
   MAIN CONTENT
   ========================================================= */

.site-main {
    width: 100%;
}

.hero {
    width: 100%;
    min-height: 520px;
    padding: 80px 30px;

    display: flex;
    align-items: center;

    background: var(--primary-soft);
}

.section {
    width: min(100% - 40px, 1200px);
    margin: 0 auto;
    padding: 80px 0;
}

.section-soft {
    width: 100%;
    background: var(--soft);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 44px;
    padding: 10px 18px;

    border-radius: var(--radius-sm);

    font-weight: 700;

    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        box-shadow var(--transition),
        transform var(--transition-fast);
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-light {
    background: var(--white);
    color: var(--primary);
    border: 1px solid var(--border);
}

.btn-light:hover {
    background: var(--soft);
}

/* =========================================================
   HOME PAGE COMPONENTS
   ========================================================= */

.container {
    width: min(100% - 40px, 1200px);
    margin: 0 auto;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
    align-items: center;
    gap: 70px;
}

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

.eyebrow {
    display: inline-block;
    margin-bottom: 14px;

    color: var(--primary);

    font-size: 12px;
    font-weight: 800;

    letter-spacing: 1.5px;
}

.hero h1 {
    margin-bottom: 20px;

    color: var(--primary-dark);

    font-size: clamp(42px, 5vw, 68px);
    line-height: 1.08;
    font-weight: 800;
}

.hero-text {
    max-width: 650px;
    margin-bottom: 28px;

    color: var(--muted);

    font-size: 17px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-card {
    padding: 38px;

    background: var(--white);

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    box-shadow: var(--shadow-md);
}

.hero-card-badge {
    margin-bottom: 16px;

    color: var(--primary);

    font-size: 11px;
    font-weight: 800;

    letter-spacing: 1.2px;
}

.hero-card h2 {
    margin-bottom: 14px;

    color: var(--primary-dark);

    font-size: 25px;
    line-height: 1.3;
}

.hero-card p {
    margin-bottom: 20px;

    color: var(--muted);

    font-size: 14px;
}

.text-link {
    color: var(--primary);

    font-size: 14px;
    font-weight: 700;
}

.section-heading {
    max-width: 750px;
    margin-bottom: 42px;
}

.section-heading h2 {
    margin-bottom: 14px;

    color: var(--primary-dark);

    font-size: 38px;
    line-height: 1.2;
}

.section-heading p {
    color: var(--muted);
    font-size: 16px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 30px;

    background: var(--white);

    border: 1px solid var(--border);
    border-radius: 12px;
}

.feature-card .icon {
    margin-bottom: 18px;

    color: var(--primary);

    font-size: 14px;
    font-weight: 800;
}

.feature-card h3 {
    margin-bottom: 10px;

    color: var(--primary-dark);

    font-size: 20px;
}

.feature-card p {
    color: var(--muted);
    font-size: 14px;
}

.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.split h2 {
    margin-bottom: 14px;

    color: var(--primary-dark);

    font-size: 36px;
}

.split p {
    margin-bottom: 24px;
    color: var(--muted);
}

.info-panel {
    padding: 32px;

    background: var(--white);

    border: 1px solid var(--border);
    border-radius: 12px;
}

.info-panel strong {
    display: block;
    margin-bottom: 10px;
    color: var(--primary-dark);
}

.info-panel p {
    margin-bottom: 0;
}

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

.site-footer {
    width: 100%;
    background: var(--primary-dark);
    color: var(--white);
}

.footer-container {
    width: min(100% - 40px, 1200px);
    margin: 0 auto;

    padding: 65px 0 50px;

    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 45px;
}

.footer-column h4 {
    margin: 0 0 20px;

    color: var(--white);

    font-size: 16px;
    font-weight: 700;
}

.footer-school {
    padding-right: 25px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 13px;

    margin-bottom: 20px;
}

.footer-logo {
    width: 58px;
    height: 58px;

    object-fit: contain;

    background: var(--white);

    border-radius: 50%;
    padding: 3px;
}

.footer-brand h3 {
    margin: 0;

    color: var(--white);

    font-size: 21px;
    font-weight: 800;
}

.footer-brand p {
    margin: 2px 0 0;

    color: #c8d6e8;

    font-size: 12px;
}

.footer-description {
    max-width: 430px;
    margin: 0;

    color: #c8d6e8;

    font-size: 13px;
    line-height: 1.8;
}

.footer-column ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column li a {
    color: #c8d6e8;

    font-size: 13px;

    transition: color var(--transition);
}

.footer-column li a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-bottom-container {
    width: min(100% - 40px, 1200px);
    min-height: 65px;

    margin: 0 auto;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 20px;
}

.footer-bottom p {
    margin: 0;

    color: #b8c8dc;

    font-size: 12px;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom-links a {
    color: #b8c8dc;
    font-size: 12px;
}

.footer-bottom-links a:hover {
    color: var(--white);
}

.footer-bottom-links span {
    color: #7186a0;
}

/* =========================================================
   ACCESSIBILITY
   ========================================================= */

a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 3px solid rgba(18, 63, 122, 0.25);
    outline-offset: 2px;
}

/* =========================================================
   TABLET
   ========================================================= */

@media (max-width: 1100px) {

    .header-container {
        padding: 0 20px;
    }

    .desktop-navigation a {
        padding-left: 7px;
        padding-right: 7px;
        font-size: 11px;
    }

    .header-action,
    .header-login {
        padding-left: 11px;
        padding-right: 11px;
        font-size: 12px;
    }

    .hero-grid {
        gap: 40px;
    }

    .footer-container {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        gap: 30px;
    }
}

/* =========================================================
   MOBILE / TABLET NAVIGATION
   ========================================================= */

@media (max-width: 900px) {

    .header-container {
        padding: 0 18px;
    }

    .header-top {
        min-height: 72px;
    }

    .site-logo {
        width: 50px;
        height: 50px;
    }

    .site-name {
        max-width: 245px;
        font-size: 16px;
    }

    /* -----------------------------------------------------
       Desktop header buttons hidden from top row
       ----------------------------------------------------- */

    .header-actions .admission-btn,
    .header-actions .enquiry-btn,
    .header-actions .portal-login {
        display: none;
    }

    .header-actions {
        margin-left: auto;
    }

    /* -----------------------------------------------------
       Hamburger
       ----------------------------------------------------- */

    .mobile-menu-button {
        display: inline-flex;
        position: relative;
        z-index: 1205;
    }

    /* -----------------------------------------------------
       Mobile navigation shell
       ----------------------------------------------------- */

    .main-navigation {
        display: none;

        width: 100%;

        border-top: 1px solid var(--border);

        background: var(--white);
    }

    .site-header.menu-open .main-navigation {
        display: block;
    }

    /*
     * Desktop menu completely hidden on mobile.
     */

    .desktop-navigation {
        display: none;
    }

    /* -----------------------------------------------------
       Mobile navigation content
       ----------------------------------------------------- */

    .mobile-navigation {
        display: block;

        width: 100%;

        padding: 12px 0 18px;
    }

    /* -----------------------------------------------------
       Home link
       ----------------------------------------------------- */

    .mobile-nav-link {
        display: flex;
        align-items: center;

        width: 100%;
        min-height: 48px;

        padding: 12px 16px;

        border-radius: var(--radius-sm);

        color: var(--text);

        font-size: 15px;
        font-weight: 700;

        transition:
            background var(--transition),
            color var(--transition);
    }

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

    /* -----------------------------------------------------
       Dropdown category
       ----------------------------------------------------- */

    .mobile-nav-dropdown {
        width: 100%;

        margin-top: 3px;

        border-radius: var(--radius-md);

        overflow: hidden;

        background: var(--white);

        transition:
            background var(--transition),
            box-shadow var(--transition);
    }

    .mobile-nav-dropdown[open] {
        background: #fbfcfe;
        box-shadow: inset 0 0 0 1px var(--border-soft);
    }

    .mobile-nav-dropdown summary {
        width: 100%;
        min-height: 50px;

        padding: 12px 16px;

        display: flex;
        align-items: center;
        justify-content: space-between;

        cursor: pointer;

        color: var(--text);

        font-size: 15px;
        font-weight: 700;

        user-select: none;

        transition:
            background var(--transition),
            color var(--transition);
    }

    .mobile-nav-dropdown summary:hover {
        background: var(--primary-soft);
        color: var(--primary);
    }

    .mobile-nav-dropdown[open] summary {
        color: var(--primary);
        background: var(--primary-soft);
    }

    /* -----------------------------------------------------
       Dropdown arrow
       ----------------------------------------------------- */

    .mobile-dropdown-arrow {
        width: 28px;
        height: 28px;

        display: inline-flex;
        align-items: center;
        justify-content: center;

        flex-shrink: 0;

        border: 1px solid var(--border);

        border-radius: 50%;

        color: var(--primary);

        font-size: 16px;
        line-height: 1;

        transition:
            transform var(--transition),
            background var(--transition),
            border-color var(--transition);
    }

    .mobile-nav-dropdown[open] .mobile-dropdown-arrow {
        transform: rotate(180deg);

        background: var(--white);
        border-color: #c8daf0;
    }

    /* -----------------------------------------------------
       Dropdown items
       ----------------------------------------------------- */

    .mobile-dropdown-items {
        padding: 4px 8px 10px 8px;

        border-top: 1px solid var(--border-soft);
    }

    .mobile-dropdown-items a {
        display: flex;
        align-items: center;

        width: 100%;
        min-height: 44px;

        padding: 10px 14px 10px 24px;

        border-radius: 7px;

        color: #475467;

        font-size: 14px;
        font-weight: 600;

        transition:
            background var(--transition),
            color var(--transition),
            padding-left var(--transition);
    }

    .mobile-dropdown-items a::before {
        content: "";
        width: 5px;
        height: 5px;

        margin-right: 11px;

        flex-shrink: 0;

        border-radius: 50%;

        background: #b7c6d9;

        transition:
            background var(--transition),
            transform var(--transition);
    }

    .mobile-dropdown-items a:hover,
    .mobile-dropdown-items a.active {
        padding-left: 28px;

        background: var(--primary-soft);

        color: var(--primary);
    }

    .mobile-dropdown-items a:hover::before,
    .mobile-dropdown-items a.active::before {
        background: var(--primary);
        transform: scale(1.2);
    }

    /* -----------------------------------------------------
       Bottom action area
       ----------------------------------------------------- */

    .mobile-navigation-actions {
        margin-top: 16px;
        padding-top: 16px;

        border-top: 1px solid var(--border);

        display: grid;
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .mobile-action {
        width: 100%;
        min-height: 48px;

        padding: 12px 16px;

        display: flex;
        align-items: center;
        justify-content: center;

        border-radius: 8px;

        font-size: 14px;
        font-weight: 700;

        transition:
            background var(--transition),
            color var(--transition),
            border-color var(--transition),
            box-shadow var(--transition),
            transform var(--transition-fast);
    }

    .mobile-action:active {
        transform: translateY(1px);
    }

    .mobile-action.admission-btn {
        background: var(--primary);
        color: var(--white);
    }

    .mobile-action.admission-btn:hover {
        background: var(--primary-dark);
    }

    .mobile-action.enquiry-btn {
        background: var(--primary-soft);
        border: 1px solid #c8daf0;
        color: var(--primary);
    }

    .mobile-action.enquiry-btn:hover {
        background: #e3edf9;
    }

    .mobile-action.portal-login {
        background: var(--white);
        border: 1px solid #b9cce3;
        color: var(--primary);
    }

    .mobile-action.portal-login:hover {
        background: var(--primary);
        border-color: var(--primary);
        color: var(--white);
    }

    /* -----------------------------------------------------
       Main page responsive layout
       ----------------------------------------------------- */

    .hero {
        min-height: auto;
        padding: 70px 0;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-card {
        max-width: 650px;
    }

    .feature-grid {
        grid-template-columns: 1fr 1fr;
    }

    .split {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 40px 30px;
    }

    .footer-school {
        grid-column: 1 / -1;
        padding-right: 0;
    }

    .footer-bottom-container {
        min-height: auto;
        padding: 18px 0;

        flex-direction: column;
        justify-content: center;

        text-align: center;
    }
}

/* =========================================================
   SMALL MOBILE
   ========================================================= */

@media (max-width: 520px) {

    .header-container {
        padding: 0 12px;
    }

    .header-top {
        min-height: 70px;
    }

    .site-logo {
        width: 44px;
        height: 44px;
    }

    .site-name {
        font-size: 17px;
    }

    .mobile-menu-button {
        width: 42px;
        height: 42px;
    }

    .mobile-navigation {
        padding-top: 10px;
    }

    .mobile-nav-link,
    .mobile-nav-dropdown summary {
        min-height: 48px;
        font-size: 14px;
    }

    .mobile-dropdown-items a {
        min-height: 43px;
        font-size: 13px;
    }

    .mobile-navigation-actions {
        margin-top: 14px;
        padding-top: 14px;
        gap: 7px;
    }

    .mobile-action {
        min-height: 47px;
        font-size: 13px;
    }

    .container {
        width: calc(100% - 28px);
    }

    .hero {
        padding: 55px 0;
    }

    .hero h1 {
        font-size: 40px;
    }

    .hero-text {
        font-size: 15px;
    }

    .hero-card {
        padding: 26px;
    }

    .section {
        width: calc(100% - 28px);
        padding: 55px 0;
    }

    .section-heading h2,
    .split h2 {
        font-size: 30px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        width: calc(100% - 28px);

        grid-template-columns: 1fr;

        padding: 50px 0 35px;

        gap: 30px;
    }

    .footer-school {
        grid-column: auto;
    }

    .footer-bottom-container {
        width: calc(100% - 28px);
    }

    .footer-bottom-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* =========================================================
   REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}