/* ===================================================================
   Torrey Pines Advanced Academy — Stylesheet
   Brand intent: precise, ambitious, classical
   Reference: college-prep.org structure, TPAA identity
   =================================================================== */

/* -------------------------------------------------------------------
   0. Design Tokens
   ------------------------------------------------------------------- */
:root {
    /* Colors */
    --navy:       #0B2545;
    --navy-light: #13315C;
    --sand:       #E8DCC4;
    --sand-dark:  #C4B8A0;
    --ivory:      #F8F8F6;
    --charcoal:   #1A1A1A;
    --white:      #FFFFFF;
    --warm-gray:  #8B7E6A;
    --light-rule: #E2DDD5;
    --gold:       #C5A55A;

    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:    'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Spacing */
    --section-pad:  clamp(80px, 10vw, 140px);
    --container:    1200px;
    --gap:          clamp(24px, 3vw, 48px);

    /* Transitions */
    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --duration: 0.5s;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 17px;
    font-weight: 400;
    line-height: 1.7;
    color: var(--charcoal);
    background-color: var(--ivory);
}

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

ul {
    list-style: none;
}

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

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

/* -------------------------------------------------------------------
   2. Typography Utilities
   ------------------------------------------------------------------- */
.section-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 1.25rem;
}

.section-heading {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--navy);
    margin-bottom: 2rem;
}

/* -------------------------------------------------------------------
   3. Layout
   ------------------------------------------------------------------- */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(24px, 4vw, 48px);
}

/* -------------------------------------------------------------------
   4. Header & Navigation
   ------------------------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.site-header.scrolled {
    background-color: var(--white);
    box-shadow: 0 1px 0 var(--light-rule);
}

.nav-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(24px, 4vw, 48px);
    display: flex;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    margin-right: auto;
    transition: color 0.4s var(--ease);
}

.nav-logo-top {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-logo-bottom {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    opacity: 0.7;
}

/* Nav links — default: white text on hero */
.nav-links {
    display: flex;
    gap: clamp(16px, 2vw, 32px);
}

.nav-links a {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    transition: opacity 0.25s var(--ease);
}

.nav-links a:hover {
    color: var(--gold);
    opacity: 1;
}

/* Color states: transparent (hero) vs scrolled */
.site-header:not(.scrolled) .nav-logo,
.site-header:not(.scrolled) .nav-links a {
    color: var(--white);
}

.site-header.scrolled .nav-logo,
.site-header.scrolled .nav-links a {
    color: var(--charcoal);
}

.nav-cta {
    margin-left: clamp(16px, 2vw, 32px);
    padding: 8px 24px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border: 1px solid;
    transition: all 0.3s var(--ease);
}

.site-header:not(.scrolled) .nav-cta {
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.4);
}

.site-header:not(.scrolled) .nav-cta:hover {
    background-color: var(--gold);
    color: var(--navy);
    border-color: var(--gold);
}

.site-header.scrolled .nav-cta {
    color: var(--navy);
    border-color: var(--navy);
}

.site-header.scrolled .nav-cta:hover {
    background-color: var(--gold);
    color: var(--navy);
    border-color: var(--gold);
}

/* Mobile toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    margin-left: 20px;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 1.5px;
    transition: all 0.3s var(--ease);
}

.site-header:not(.scrolled) .nav-toggle span {
    background-color: var(--white);
}

.site-header.scrolled .nav-toggle span {
    background-color: var(--charcoal);
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* -------------------------------------------------------------------
   5. Hero
   ------------------------------------------------------------------- */
.hero {
    position: relative;
    height: 90vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    overflow: hidden;

    background: url('assets/hero.png') center center / cover no-repeat;
}

.hero-overlay {
    display: none;
}

/* Top nav band — hard-edged, dark warm */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(17, 9, 2, 0.5);
    z-index: 2;
}

/* No separate center overlay — background lives on .hero-content instead */
.hero::after {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: 48px 56px;
    background: rgba(17, 9, 2, 0.5);
    border-radius: 16px;
}

.hero-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    opacity: 0.7;
    margin-bottom: 2rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 300;
    line-height: 1.05;
    letter-spacing: -0.01em;
    margin-bottom: 1.75rem;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    font-weight: 300;
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 2.5rem;
    opacity: 0.85;
}

.hero-cta {
    display: inline-block;
    padding: 14px 40px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    border: 1px solid rgba(255, 255, 255, 0.35);
    transition: all 0.3s var(--ease);
}

.hero-cta:hover {
    background-color: var(--gold);
    color: var(--navy);
    border-color: var(--gold);
}

/* -------------------------------------------------------------------
   6. Mission
   ------------------------------------------------------------------- */
.mission {
    padding: var(--section-pad) 0;
    background-color: var(--white);
}

.mission-inner {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}

.mission-heading {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.25rem);
    font-weight: 400;
    font-style: italic;
    line-height: 1.2;
    color: var(--navy);
    margin-bottom: 2.5rem;
}

.mission-body p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #3a3a3a;
    margin-bottom: 1.5rem;
}

.mission-body p:last-child {
    margin-bottom: 0;
}

/* -------------------------------------------------------------------
   7. Program Pillars
   ------------------------------------------------------------------- */
.pillars {
    padding: var(--section-pad) 0;
    background-color: var(--ivory);
}

.pillars .section-label,
.pillars .section-heading {
    text-align: center;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap);
    margin-top: 3rem;
}

.pillar {
    display: flex;
    flex-direction: column;
}

.pillar-image {
    position: relative;
    width: 100%;
    padding-top: 66%;
    overflow: hidden;
    margin-bottom: 1.75rem;
}

.pillar-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pillar-tag {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 0.75rem;
}

.pillar-title {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2vw, 1.6rem);
    font-weight: 500;
    line-height: 1.25;
    color: var(--navy);
    margin-bottom: 1rem;
}

.pillar-text {
    font-size: 0.95rem;
    line-height: 1.7;
    color: #4a4a4a;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.pillar-link {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--navy);
    transition: opacity 0.25s var(--ease);
}

.pillar-link:hover {
    color: var(--gold);
    opacity: 1;
}

/* -------------------------------------------------------------------
   8. Fast Facts
   ------------------------------------------------------------------- */
.facts {
    padding: clamp(60px, 8vw, 100px) 0;
    background-color: var(--navy);
    color: var(--white);
}

.facts-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--gap);
    text-align: center;
}

.fact-number {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 4vw, 3.25rem);
    font-weight: 300;
    line-height: 1;
    margin-bottom: 0.75rem;
}

.fact-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.65;
    line-height: 1.4;
}

/* -------------------------------------------------------------------
   9. Matriculation
   ------------------------------------------------------------------- */
.matriculation {
    padding: var(--section-pad) 0;
    background-color: var(--white);
}

.matriculation-inner {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.matriculation-intro {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #4a4a4a;
    margin-bottom: 3rem;
}

.matriculation-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 4px 0;
    line-height: 2.4;
}

.university {
    font-family: var(--font-display);
    font-size: clamp(1.05rem, 1.5vw, 1.2rem);
    font-weight: 500;
    font-style: italic;
    color: var(--navy);
    white-space: nowrap;
}

.university-dot {
    display: inline-block;
    margin: 0 clamp(8px, 1.2vw, 18px);
    font-size: 1.2rem;
    color: var(--sand-dark);
    user-select: none;
}

/* -------------------------------------------------------------------
   10. Inquiry Form
   ------------------------------------------------------------------- */
.inquiry {
    padding: var(--section-pad) 0;
    background-color: var(--ivory);
    border-top: 1px solid var(--light-rule);
}

.inquiry-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: clamp(48px, 6vw, 96px);
    align-items: start;
}

.inquiry .section-heading {
    margin-bottom: 1.25rem;
}

.inquiry-intro {
    font-size: 1rem;
    line-height: 1.7;
    color: #4a4a4a;
    margin-bottom: 2.5rem;
}

.inquiry-details {
    font-size: 0.9rem;
    line-height: 1.8;
    color: #5a5a5a;
}

.inquiry-details strong {
    color: var(--charcoal);
    font-weight: 600;
}

/* Form elements */
.inquiry-form {
    background-color: var(--white);
    padding: clamp(32px, 4vw, 48px);
    border: 1px solid var(--light-rule);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row .form-group {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--navy);
    margin-bottom: 8px;
}

.form-group .optional {
    text-transform: none;
    letter-spacing: 0;
    color: var(--warm-gray);
    font-family: var(--font-body);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--charcoal);
    background-color: var(--ivory);
    border: 1px solid var(--light-rule);
    border-radius: 0;
    outline: none;
    transition: border-color 0.25s var(--ease);
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--navy);
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238B7E6A' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-submit {
    display: block;
    width: 100%;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--white);
    background-color: var(--navy);
    border: 1px solid var(--navy);
    transition: all 0.3s var(--ease);
    margin-top: 8px;
}

.form-submit:hover {
    background-color: var(--gold);
    border-color: var(--gold);
    color: var(--navy);
}

.form-success {
    display: none;
    margin-top: 24px;
    padding: 20px;
    background-color: var(--ivory);
    border: 1px solid var(--sand-dark);
    text-align: center;
}

.form-success p {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-style: italic;
    color: var(--navy);
}

.form-success.visible {
    display: block;
}

/* Validation states */
.form-group input.invalid,
.form-group select.invalid {
    border-color: #b44;
}

/* -------------------------------------------------------------------
   11. Footer
   ------------------------------------------------------------------- */
.site-footer {
    padding: clamp(60px, 8vw, 100px) 0 clamp(40px, 5vw, 60px);
    background-color: var(--navy);
    color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--gap);
    padding-bottom: clamp(40px, 5vw, 60px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.footer-logo-top {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer-logo-bottom {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    opacity: 0.6;
}

.footer-address,
.footer-contact {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.footer-nav h3 {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 1.25rem;
}

.footer-nav ul li {
    margin-bottom: 0.6rem;
}

.footer-nav a {
    font-size: 0.9rem;
    transition: color 0.25s var(--ease);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: clamp(24px, 3vw, 40px);
    font-size: 0.8rem;
}

.footer-motto {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-style: italic;
    color: var(--gold);
    letter-spacing: 0.05em;
}

/* -------------------------------------------------------------------
   12. Scroll Reveal Animations
   ------------------------------------------------------------------- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children in grids */
.pillars-grid .pillar.reveal:nth-child(2) { transition-delay: 0.1s; }
.pillars-grid .pillar.reveal:nth-child(3) { transition-delay: 0.2s; }

.facts-grid .fact.reveal:nth-child(2) { transition-delay: 0.06s; }
.facts-grid .fact.reveal:nth-child(3) { transition-delay: 0.12s; }
.facts-grid .fact.reveal:nth-child(4) { transition-delay: 0.18s; }
.facts-grid .fact.reveal:nth-child(5) { transition-delay: 0.24s; }
.facts-grid .fact.reveal:nth-child(6) { transition-delay: 0.30s; }

/* -------------------------------------------------------------------
   13. Responsive
   ------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .pillars-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .facts-grid {
        grid-template-columns: repeat(3, 1fr);
        row-gap: clamp(32px, 4vw, 48px);
    }

    .inquiry-layout {
        grid-template-columns: 1fr;
        max-width: 640px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        row-gap: clamp(32px, 4vw, 48px);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    /* Mobile menu */
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--white);
        padding: 40px clamp(24px, 4vw, 48px);
        gap: 0;
        z-index: 99;
    }

    .nav-links.open li {
        border-bottom: 1px solid var(--light-rule);
    }

    .nav-links.open a {
        display: block;
        padding: 16px 0;
        font-size: 1rem;
        color: var(--charcoal) !important;
    }

    .hero-title {
        font-size: clamp(2.5rem, 10vw, 3.5rem);
    }

    .facts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .matriculation-list {
        gap: 2px 0;
    }

    .university {
        white-space: normal;
    }
}

@media (max-width: 480px) {
    .facts-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .inquiry-form {
        padding: 24px;
    }
}