/*
Theme Name: itechedu
Theme URI: https://itechedu.com/
Author: Antigravity
Author URI: https://google.com/
Description: Custom, high-performance education and technology summit portal theme for itechedu.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: itechedu
*/

/* Custom Base CSS variables and adjustments */
:root {
    --color-primary: #0f172a;
    --color-primary-light: #1e293b;
    --color-accent: #06b6d4;
    --color-teal: #0d9488;
}

body {
    font-family: 'Poppins', 'Inter', system-ui, -apple-system, sans-serif;
    background-color: #f8fafc;
    color: #1e293b;
    scroll-behavior: smooth;
}

/* Glassmorphism Classes */
.glass-panel {
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.glass-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.05);
}

/* Tab Transitions */
.tab-content {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
    opacity: 1;
}

/* Lightbox styles */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.95);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-img {
    max-width: 90%;
    max-height: 80%;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.lightbox.active .lightbox-img {
    transform: scale(1);
}

/* Countdown Animations */
@keyframes pulse-subtle {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.85; transform: scale(0.98); }
}

.countdown-box {
    animation: pulse-subtle 4s infinite ease-in-out;
}

/* Entrance Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 15px rgba(6, 182, 212, 0.2); }
    50% { box-shadow: 0 0 25px rgba(6, 182, 212, 0.4); }
}

.animate-fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-up {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-glow {
    animation: glowPulse 3s infinite ease-in-out;
}

/* Card hover and interactive transitions */
.hover-lift {
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.hover-lift:hover {
    transform: translateY(-6px) !important;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04) !important;
}
/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(35px);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, opacity;
}

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

/* Sticky Header Scrolled Styles */
header.scrolled {
    background-color: rgba(9, 15, 29, 0.9) !important;
    backdrop-filter: blur(12px) !important;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.3) !important;
    border-color: rgba(255, 255, 255, 0.05) !important;
}

header.scrolled .h-20 {
    height: 4.5rem !important; /* Smoothly shrinks row height on scroll */
}

/* Entrance Animation Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.96);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Entrance Utility Classes */
.animate-fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-scale-in {
    opacity: 0;
    animation: scaleIn 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Stagger Delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }
.delay-900 { animation-delay: 900ms; }
.delay-1000 { animation-delay: 1000ms; }
.delay-1100 { animation-delay: 1100ms; }
.delay-1200 { animation-delay: 1200ms; }
.delay-1300 { animation-delay: 1300ms; }