/* ==========================================
   GLOBAL VARIABLES & TYPOGRAPHY
   Based on Forensic Design Audit
========================================== */
:root {
    /* Colors */
    --clr-navy: #0A1128;         /* Primary Background / Dark Mode base */
    --clr-navy-dark: #050914;    /* Ultra Dark Navy (Footer) */
    --clr-navy-light: #131B2A;   /* Card background (Dark mode) */
    --clr-crimson: #D91624;      /* Accent color */
    --clr-crimson-hover: #A50E18;/* Button hover color */
    --clr-parchment: #F4E8D1;    /* Light Parchment */
    --clr-parchment-border: #D4C4A8; /* Border Color */
    --clr-light-gray: #F9F9F9;
    
    --clr-text-main: #1A1A1A;    /* Primary text on light */
    --clr-text-muted: #4A4A4A;   /* Muted text on light */
    --clr-text-light: #F4E8D1;   /* Text on dark navy backgrounds */
    --clr-white: #FFFFFF;

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --space-8: 8px;
    --space-16: 16px;
    --space-24: 24px;
    --space-32: 32px;
    --space-48: 48px;
    --space-64: 64px;
    --space-80: 80px;
    --space-96: 96px;
    --space-120: 120px;

    /* Border Radius (Sharp / Disciplined per audit) */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-pill: 999px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================
   RESET & BASE STYLES
========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px; 
}

body {
    font-family: var(--font-body);
    color: var(--clr-text-main);
    background-color: var(--clr-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

/* ==========================================
   UTILITY CLASSES
========================================== */
.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 60px; /* Global horizontal padding */
    padding-right: 60px;
}
.container-1320 { max-width: 1440px; } /* max 1320px content + 120px padding total */
.container-1100 { max-width: 1220px; }
.container-800  { max-width: 920px; }

@media (max-width: 1024px) {
    .container { padding-left: 40px; padding-right: 40px; }
}
@media (max-width: 768px) {
    .container { padding-left: 20px; padding-right: 20px; }
}

/* Typography Utilities */
.text-center { text-align: center; }
.text-light { color: var(--clr-text-light); }
.text-navy { color: var(--clr-navy) !important; }
.text-crimson { color: var(--clr-crimson) !important; }
.opacity-80 { opacity: 0.8; }
.text-large { font-size: 1.25rem; } /* 20px */
.font-medium { font-weight: 500; }

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800; /* Bold per audit */
    line-height: 1.1;
}

.section-subtitle {
    font-size: 0.875rem; /* 14px */
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--clr-crimson);
    margin-bottom: var(--space-8);
    font-weight: 800;
}

.section-heading {
    font-size: 3rem; /* 48px */
    margin-bottom: var(--space-24);
}
@media (max-width: 768px) {
    .section-heading { font-size: 2.25rem; /* 36px */ }
}

.section-text {
    font-size: 1.125rem; /* 18px */
    color: var(--clr-text-muted);
}
.bg-dark .section-text {
    color: var(--clr-text-light);
    opacity: 0.8;
}

/* Spacing Utilities */
.mt-24 { margin-top: var(--space-24); }
.mt-32 { margin-top: var(--space-32); }
.mb-24 { margin-bottom: var(--space-24); }
.mb-32 { margin-bottom: var(--space-32); }
.mb-48 { margin-bottom: var(--space-48); }
.mb-64 { margin-bottom: var(--space-64); }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-600 { max-width: 600px; }

/* Background Utilities */
.bg-dark { background-color: var(--clr-navy); color: var(--clr-text-light); }
.bg-ultra-dark { background-color: var(--clr-navy-dark); color: var(--clr-white); }
.bg-parchment { background-color: var(--clr-parchment); }
.bg-accent { background-color: var(--clr-crimson); color: var(--clr-white); }
.bg-light-gray { background-color: var(--clr-light-gray); }

.position-relative { position: relative; }


/* ==========================================
   BUTTONS
========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 28px;
    border-radius: var(--radius-pill);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--clr-crimson);
    color: var(--clr-white);
}
.btn-primary:hover {
    background-color: var(--clr-crimson-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(217, 22, 36, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--clr-parchment);
    border-color: var(--clr-parchment);
}
.btn-secondary:hover {
    background-color: var(--clr-white);
    color: var(--clr-navy);
    border-color: var(--clr-white);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--clr-white);
    border-color: var(--clr-white);
}
.btn-outline-light:hover {
    background-color: var(--clr-white);
    color: var(--clr-crimson);
}
.btn-large {
    padding: 20px 40px;
    font-size: 1.125rem;
}


/* ==========================================
   HEADER SECTION
========================================== */
.section-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 90px;
    background-color: rgba(10, 17, 40, 0.95); /* Deep Indigo 95% */
    backdrop-filter: blur(8px);
    z-index: 100;
    transition: height var(--transition-normal);
    display: flex;
    align-items: center;
}
.section-header.scrolled {
    height: 70px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    max-width: 65px; /* Adjusting actual circle logo to sensible header size */
    height: auto;
}

.nav-menu {
    display: flex;
    gap: var(--space-24);
}
.nav-menu a {
    color: var(--clr-white);
    font-family: var(--font-body);
    font-weight: 600;
}
.nav-menu a:hover {
    color: var(--clr-crimson);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}
.mobile-menu-toggle span {
    width: 30px;
    height: 2px;
    background-color: var(--clr-white);
    transition: var(--transition-fast);
}

@media (max-width: 1024px) {
    .nav-menu, .header-cta { display: none; }
    .mobile-menu-toggle { display: flex; }
}


/* ==========================================
   HERO SECTION
========================================== */
.section-hero {
    position: relative;
    height: 100vh;
    min-height: 750px;
    max-height: 900px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 17, 40, 0.75); /* Darker Navy tint to make text readable based on banner image */
    z-index: 2;
}

.hero-inner {
    position: relative;
    z-index: 10;
}

.hero-heading {
    font-size: 4.5rem; /* 72px */
    color: var(--clr-parchment);
    margin-bottom: var(--space-16);
    text-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.hero-subheading {
    font-size: 1.375rem; /* 22px */
    color: rgba(255,255,255, 0.9);
    max-width: 480px;
    margin: 0 auto var(--space-48) auto;
}

.hero-buttons {
    display: flex;
    gap: var(--space-16);
    justify-content: center;
}

@media (max-width: 768px) {
    .hero-heading { font-size: 3rem; }
    .hero-buttons { flex-direction: column; width: 100%; max-width: 300px; margin: 0 auto; }
}


/* ==========================================
   ABOUT SECTION
========================================== */
.section-about {
    padding-top: var(--space-120);
    padding-bottom: var(--space-120);
}

.about-inner {
    display: flex;
    align-items: center;
    gap: var(--space-64);
}

.about-image-col, .about-content-col {
    flex: 1;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.about-image-wrapper::before {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    background-color: var(--clr-parchment);
    z-index: -1;
    border-radius: var(--radius-md);
}

.about-img {
    width: 100%;
    border-radius: var(--radius-md);  /* Sharp disciplined shape */
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    object-fit: cover;
    z-index: 2;
    position: relative;
}

@media (max-width: 1024px) {
    .about-inner { flex-direction: column; }
}


/* ==========================================
   PROGRAMS SECTION
========================================== */
.section-programs {
    padding-top: var(--space-120);
    padding-bottom: var(--space-120);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-32);
}

.program-card {
    background-color: var(--clr-navy-light);
    padding: 48px 32px;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05); /* Subtle border */
}
.program-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
    border-color: rgba(255,255,255,0.1);
}

.program-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-24) auto;
}
.program-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.invert-icon {
    filter: brightness(0) invert(1) opacity(0.85); /* Converts dark SVGs to light */
}

.program-card:hover .invert-icon {
    filter: brightness(0) invert(1) saturate(100) sepia(100) hue-rotate(-50deg); /* Approximate crimson */
}

.card-heading {
    font-size: 1.5rem; /* 24px */
    margin-bottom: var(--space-16);
    color: var(--clr-text-main); /* Changed to default dark color */
}

/* Explicitly make program-card headings light since background is dark */
.program-card .card-heading {
    color: var(--clr-white);
}

@media (max-width: 1024px) {
    .programs-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .programs-grid { grid-template-columns: 1fr; }
}


/* ==========================================
   INSTRUCTORS SECTION
========================================== */
.section-instructors {
    padding-top: var(--space-120);
    padding-bottom: var(--space-120);
}

.instructors-grid {
    display: grid;
    gap: var(--space-32);
}

.instructors-grid-6 {
    grid-template-columns: repeat(3, 1fr);
}

.instructor-card {
    text-align: center;
}

.instructor-image-wrapper {
    width: 100%;
    aspect-ratio: 4/5;
    overflow: hidden;
    position: relative;
    border-radius: var(--radius-md);
    background-color: var(--clr-white); /* for transparent BG images */
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.instructor-overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 30%;
    background: linear-gradient(to top, rgba(0,0,0,0.08), transparent);
    z-index: 10;
}

.instructor-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top; /* Since these are likely portraits, crop from top */
    filter: grayscale(100%);
    transition: filter var(--transition-normal), transform var(--transition-slow);
}

.instructor-card:hover .instructor-img {
    filter: grayscale(0%);
    transform: scale(1.05); /* Zoom on hover */
}

@media (max-width: 1024px) {
    .instructors-grid-6 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .instructors-grid-6 { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
}


/* ==========================================
   ACHIEVEMENTS SECTION
========================================== */
.section-achievements {
    padding-top: var(--space-120);
    padding-bottom: var(--space-120);
    border-top: 1px solid var(--clr-parchment-border);
    border-bottom: 1px solid var(--clr-parchment-border);
}

.achievements-grid.four-col {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-24);
}

.achievement-card {
    background: var(--clr-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform var(--transition-normal);
}
.achievement-card:hover { transform: translateY(-4px); }

.achievement-img-container {
    width: 100%;
    height: 220px;
    overflow: hidden;
}

.achievement-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.achievement-card:hover .achievement-img { transform: scale(1.08); }

.achievement-content {
    padding: var(--space-24);
}
.achievement-content .card-heading {
    color: var(--clr-text-main);
    font-size: 1.25rem;
}

@media (max-width: 1200px) {
    .achievements-grid.four-col { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .achievements-grid.four-col { grid-template-columns: 1fr; }
}


/* ==========================================
   GALLERY SECTION
========================================== */
.section-gallery {
    padding-top: var(--space-120);
    padding-bottom: var(--space-120);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-16);
}

.gallery-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    min-height: 300px;
}

.item-large {
    grid-row: span 2;
}

.item-wide {
    grid-column: span 2;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(10, 17, 40, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}
.gallery-icon {
    color: var(--clr-white);
    font-size: 3rem;
}

.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-item:hover img { transform: scale(1.05); }

@media (max-width: 1024px) {
    .gallery-grid { grid-template-columns: 1fr; }
    .item-large, .item-wide { grid-row: span 1; grid-column: span 1; }
}


/* ==========================================
   CONTACT CTA SECTION
========================================== */
.section-contact {
    padding-top: var(--space-120);
    padding-bottom: var(--space-120);
}

.bg-pattern-overlay::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: repeating-linear-gradient(45deg, rgba(0,0,0,0.05) 0, rgba(0,0,0,0.05) 2px, transparent 2px, transparent 10px);
}

@media (max-width: 768px) {
    .section-contact {
        padding-top: var(--space-80);
        padding-bottom: var(--space-80);
    }
}


/* ==========================================
   FOOTER SECTION
========================================== */
.section-footer {
    padding-top: var(--space-80);
    padding-bottom: var(--space-32);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-48);
    margin-bottom: var(--space-64);
}

.footer-logo {
    max-width: 80px; /* Adapted for the actual circle logo size */
}
.footer-text {
    color: rgba(255,255,255, 0.7);
}

.footer-heading {
    font-size: 1.25rem;
    margin-bottom: var(--space-24);
    color: var(--clr-white);
}

.footer-links li { margin-bottom: 12px; }
.footer-links a { color: rgba(255,255,255, 0.7); font-weight: 500;}
.footer-links a:hover { color: var(--clr-crimson); }

.footer-contact-list { color: rgba(255,255,255, 0.7); }
.footer-contact-list li { margin-bottom: 12px; }

.footer-socials {
    display: flex;
    gap: var(--space-16);
}
.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-white);
    font-size: 0.875rem;
    font-weight: 600;
}
.social-icon:hover {
    background: var(--clr-crimson);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-32);
    border-top: 1px solid rgba(255,255,255, 0.1);
    color: rgba(255,255,255, 0.5);
    font-size: 0.875rem;
}

@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-col { grid-column: 1 / -1; } /* Span full width on tablet */
}
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-logo { margin-left: auto; margin-right: auto; }
    .footer-socials { justify-content: center; }
}