/* style.css - Global Styles and variables */

/* ==========================================
   1. Custom Properties (Variables)
   ========================================== */
:root {
    /* Brand Colors - Client Approved Design System */
    --color-deep-blue: #142665;         /* Primary Deep Corporate Blue - lightened for better visibility */
    --color-corporate-navy: #1A2F73;    /* Corporate Navy - lightened */
    --color-professional-purple: #5B3B8C; /* Professional Purple Accent */
    --color-sky-blue: #7CCEFA;          /* Sky Blue Highlight */
    --color-soft-blue: #E8F0FE;         /* Soft Blue Background */
    --color-white: #FFFFFF;             /* White */
    --color-light-gray: #F5F7FA;        /* Light Gray Background */
    --color-dark-navy: #080C2A;         /* Darkest Navy for deep sections */
    
    /* Legacy variable aliases for backward compatibility */
    --color-primary-blue: var(--color-deep-blue);
    --color-secondary-blue: var(--color-sky-blue);
    --color-accent-main: var(--color-professional-purple);
    --color-accent-hover: #4A2E75;
    --color-bg-light-violet: var(--color-light-gray);
    --color-bg-very-light-grey: var(--color-light-gray);
    --color-light-blue: #D1D9E6;
    
    /* Support Colors */
    --color-success-green: #2EB67D;
    --color-warning-orange: #F59E0B;
    
    /* Text Colors */
    --color-dark-text: #111827;
    --color-text-muted: #6B7280;
    --dark-blue: var(--color-deep-blue);
    
    /* Typography */
    --font-family-main: 'Poppins', 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    --spacing-xxl: 80px;
    
    /* Border Radius & Shadows - Client: 12px cards */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --shadow-soft: 0 8px 30px rgba(13, 27, 74, 0.06);
    --shadow-hover: 0 16px 40px rgba(13, 27, 74, 0.12);
    --shadow-premium: 0 20px 60px rgba(13, 27, 74, 0.15);
    
    /* Transitions */
    --transition-fast: 0.3s ease;

    /* Backward compatibility/fallback aliases for FAQ and Awards pages */
    --white: var(--color-white);
    --primary-color: var(--color-primary-blue);
    --text-color: var(--color-text-muted);
    --border-color: var(--color-light-blue);
    --dark-text: var(--color-dark-text);
    --light-bg: var(--color-light-gray);
}

/* ==========================================
   2. Reset / Normalize
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px; /* 1rem = 16px */
}

body {
    font-family: var(--font-family-main);
    color: var(--color-dark-text);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

ul {
    list-style: none;
}

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

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

/* ==========================================
   3. Typography (Visual Hierarchy Upgrades)
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-primary-blue);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
}

/* ==========================================
   4. Layout / Grid (Containers)
   ========================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xxl) 0;
}

/* ==========================================
   5. Buttons System - Client Approved
   ========================================== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
}

.btn-primary {
    background-color: var(--color-deep-blue);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(13, 27, 74, 0.2);
}

.btn-primary:hover {
    background-color: var(--color-professional-purple);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(91, 59, 140, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-deep-blue);
    border: 2px solid var(--color-deep-blue);
}

.btn-secondary:hover {
    background-color: var(--color-deep-blue);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(13, 27, 74, 0.2);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--color-white);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline-light:hover {
    background: var(--color-white);
    color: var(--color-deep-blue);
    border-color: var(--color-white);
    transform: translateY(-3px);
}

/* ==========================================
   6. Spacing & Header Utilities
   ========================================== */
.text-center { text-align: center; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.section-header h2 {
    font-size: 2.5rem; /* Upgraded for strong visual hierarchy */
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-xs);
}

.section-header h2::before {
    content: '';
    position: absolute;
    bottom: 1.5px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--color-sky-blue);
    opacity: 0.4;
    border-radius: 1px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-sky-blue), var(--color-professional-purple));
    border-radius: 2px;
    z-index: 1;
}

.section-header p {
    font-size: 1.15rem;
    color: var(--color-text-muted);
}

/* ==========================================
   7. Shared Hero Caption (all pages)
   ========================================== */
.hero-caption {
    position: relative;
    z-index: 2;
    max-width: 850px;
    margin: 0 auto;
    padding: 35px 40px;
    background: rgba(41, 41, 43, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 16px;
    backdrop-filter: blur(4px);
}

.hero-caption h1 {
    color: var(--color-white) !important;
    font-size: 3rem !important;
    font-weight: 800 !important;
    max-width: 800px;
    margin: 0 auto var(--spacing-sm) !important;
    line-height: 1.15 !important;
    letter-spacing: -0.5px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.25);
}

.hero-caption p {
    color: var(--color-sky-blue) !important;
    font-size: 1.15rem !important;
    max-width: 700px;
    margin: 0 auto !important;
    font-weight: 400;
    line-height: 1.7;
}

/* Bottom subtle inset shadow on all page headers */
.service-detail-hero,
.services-hero,
.platforms-hero,
.about-hero,
.contact-hero,
.place-hero,
.res-hero,
.map-hero,
.inst-hero,
.prod-hero,
.vmv-hero,
.journey-hero,
.career-hero,
.awards-hero,
.evt-hero,
.news-hero,
.dl-hero,
.faq-hero,
.ent-hero,
.sm-hero,
.policy-hero {
    box-shadow: inset 0 -80px 60px -40px rgba(20, 38, 101, 0.08);
}

/* Global Tint Classes for Icons */
.blue-tint { background: rgba(0, 82, 255, 0.1); color: var(--color-primary-blue); }
.orange-tint { background: rgba(255, 107, 0, 0.1); color: #FF6B00; }
.purple-tint { background: rgba(123, 44, 191, 0.1); color: #7B2CBF; }
.green-tint { background: rgba(0, 179, 110, 0.1); color: #00B36E; }

.service-card:hover .blue-tint, .project-card:hover .blue-tint, .program-card:hover .blue-tint, .solution-card:hover .blue-tint { background: var(--color-primary-blue); color: var(--color-white); }
.service-card:hover .orange-tint, .project-card:hover .orange-tint, .program-card:hover .orange-tint, .solution-card:hover .orange-tint { background: #FF6B00; color: var(--color-white); }
.service-card:hover .purple-tint, .project-card:hover .purple-tint, .program-card:hover .purple-tint, .solution-card:hover .purple-tint { background: #7B2CBF; color: var(--color-white); }
.service-card:hover .green-tint, .project-card:hover .green-tint, .program-card:hover .green-tint, .solution-card:hover .green-tint { background: #00B36E; color: var(--color-white); }