/*
* File: style.css
* Author: AI Assistant
* Description: Stylesheet for 'Computer Courses' website using Neumorphism, Split-Complementary colors, and 3D animations.
*/

/* ---------------------------------- */
/*          CSS Variables             */
/* ---------------------------------- */

:root {
    /* Color Palette (Split-Complementary) */
    --bg-color: #e6e7ee;
    --primary-color: #4A90E2; /* Blue */
    --accent-color-1: #e88d14; /* Orange */
    --accent-color-2: #50c878; /* Emerald Green */
    
    /* Text Colors */
    --text-color-dark: #333a45;
    --text-color-medium: #5a6474;
    --text-color-light: #ffffff;

    /* Neumorphism Shadows */
    --shadow-light: rgba(255, 255, 255, 0.8);
    --shadow-dark: rgba(186, 193, 206, 0.7);
    --shadow-distance: 8px;
    --shadow-blur: 16px;

    /* Typography */
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Nunito', sans-serif;

    /* Layout */
    --header-height: 80px;
    --container-width: 1200px;
    --border-radius: 15px;
}

/* ---------------------------------- */
/*          Global Styles             */
/* ---------------------------------- */

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

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

body {
    font-family: var(--font-body);
    color: var(--text-color-dark);
    background-color: var(--bg-color);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

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

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-color-1);
}

/* ---------------------------------- */
/*          Typography                */
/* ---------------------------------- */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-color-dark);
    margin-bottom: 0.75rem;
    line-height: 1.2;
    text-shadow: 1px 1px 2px var(--shadow-light);
}

.section-title {
    font-size: 2.8rem;
    text-align: center;
    margin-bottom: 1.5rem;
    position: relative;
}

.section-intro {
    font-size: 1.1rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem auto;
    color: var(--text-color-medium);
}

/* ---------------------------------- */
/*       Layout & Helpers             */
/* ---------------------------------- */

.section-padding {
    padding: 6rem 0;
}

.section-textured {
    background-image: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23d4d8e0" fill-opacity="0.4"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
}

/* ---------------------------------- */
/*          Header & Navigation       */
/* ---------------------------------- */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(230, 231, 238, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
    border-bottom: 1px solid rgba(186, 193, 206, 0.3);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.main-nav .nav-links {
    display: flex;
    list-style: none;
}

.main-nav .nav-links li {
    margin-left: 2rem;
}

.main-nav .nav-links a {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text-color-medium);
    padding: 0.5rem 0;
    position: relative;
    letter-spacing: 1px;
}

.main-nav .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--accent-color-1);
    border-radius: 2px;
    transition: width 0.4s ease;
}

.main-nav .nav-links a:hover::after,
.main-nav .nav-links a.active::after {
    width: 100%;
}

.burger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.burger-bar {
    display: block;
    width: 28px;
    height: 3px;
    background-color: var(--text-color-dark);
    margin: 5px 0;
    border-radius: 2px;
    transition: all 0.4s ease-in-out;
}

/* ---------------------------------- */
/*        Neumorphic Components       */
/* ---------------------------------- */

/* Global Button Style */
.neumorphic-button, .neumorphic-button-small {
    display: inline-block;
    border: none;
    border-radius: var(--border-radius);
    background: var(--bg-color);
    font-family: var(--font-heading);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    box-shadow: var(--shadow-distance) var(--shadow-distance) var(--shadow-blur) var(--shadow-dark), 
                calc(-1 * var(--shadow-distance)) calc(-1 * var(--shadow-distance)) var(--shadow-blur) var(--shadow-light);
}

.neumorphic-button {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    color: var(--primary-color);
}
.neumorphic-button-small {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    color: var(--text-color-medium);
}

.neumorphic-button:hover, .neumorphic-button-small:hover {
    color: var(--accent-color-1);
    transform: translateY(-2px);
}

.neumorphic-button:active, .neumorphic-button-small:active {
    transform: translateY(1px);
    box-shadow: inset var(--shadow-distance) var(--shadow-distance) var(--shadow-blur) var(--shadow-dark), 
                inset calc(-1 * var(--shadow-distance)) calc(-1 * var(--shadow-distance)) var(--shadow-blur) var(--shadow-light);
}

/* Cards */
.neumorphic-card, .neumorphic-card-inset {
    background: var(--bg-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.neumorphic-card {
    box-shadow: var(--shadow-distance) var(--shadow-distance) var(--shadow-blur) var(--shadow-dark), 
                calc(-1 * var(--shadow-distance)) calc(-1 * var(--shadow-distance)) var(--shadow-blur) var(--shadow-light);
}

.neumorphic-card:hover {
    transform: translateY(-10px) perspective(1000px) rotateY(5deg);
    box-shadow: calc(var(--shadow-distance) * 2) calc(var(--shadow-distance) * 2) calc(var(--shadow-blur) * 1.5) var(--shadow-dark), 
                calc(-1 * var(--shadow-distance) * 2) calc(-1 * var(--shadow-distance) * 2) calc(var(--shadow-blur) * 1.5) var(--shadow-light);
}

.neumorphic-card-inset {
     box-shadow: inset calc(var(--shadow-distance) / 2) calc(var(--shadow-distance) / 2) calc(var(--shadow-blur) / 2) var(--shadow-dark), 
                inset calc(-1 * var(--shadow-distance) / 2) calc(-1 * var(--shadow-distance) / 2) calc(var(--shadow-blur) / 2) var(--shadow-light);
}

.card {
    display: flex;
    flex-direction: column;
    text-align: center;
    height: 100%;
}

.card-image {
    margin: -2rem -2rem 1.5rem -2rem; /* Extend to edges */
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    overflow: hidden;
    height: 250px; /* Fixed height for consistency */
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-image img {
    transform: scale(1.1);
}

.card-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.card-content h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
}
.card-content h4 {
    font-size: 1rem;
    color: var(--text-color-medium);
    font-weight: 400;
    margin-bottom: 1rem;
}

/* ---------------------------------- */
/*         Section Styles             */
/* ---------------------------------- */

/* Hero Section */
.hero-section {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed; /* Parallax effect */
    color: var(--text-color-light);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.4));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--text-color-light);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin: 1.5rem 0 2.5rem;
    color: var(--text-color-light);
    opacity: 0.9;
}

/* Instructors & Testimonials Sliders */
.custom-slider-container {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

/* Portfolio Section */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

/* Testimonials Section */
.testimonial-card {
    padding: 2rem;
    text-align: center;
}
.testimonial-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 1.5rem;
    box-shadow: 5px 5px 10px var(--shadow-dark), -5px -5px 10px var(--shadow-light);
}
.testimonial-card blockquote p {
    font-style: italic;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}
.testimonial-card cite {
    font-weight: 700;
    color: var(--primary-color);
}

/* Events Section */
.events-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.event-item {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1.5rem;
}
.event-date {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background-color: var(--primary-color);
    color: var(--text-color-light);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    box-shadow: inset 3px 3px 6px rgba(0,0,0,0.2), inset -3px -3px 6px rgba(255,255,255,0.7);
}
.event-date span {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}
.event-details {
    flex-grow: 1;
}
.event-details h3 {
    color: var(--primary-color);
}
.event-time {
    font-weight: 700;
    color: var(--text-color-medium);
}

/* Insights Section */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.read-more {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--accent-color-1);
    margin-top: auto; /* Pushes to the bottom */
    padding-top: 1rem;
}

/* Awards Section */
.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}
.award-item {
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.award-item img {
    width: 100px;
    height: 100px;
    margin-bottom: 1.5rem;
    filter: drop-shadow(3px 3px 5px var(--shadow-dark));
}

/* Media Section */
.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}
.media-item img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-distance) var(--shadow-distance) var(--shadow-blur) var(--shadow-dark), 
                calc(-1 * var(--shadow-distance)) calc(-1 * var(--shadow-distance)) var(--shadow-blur) var(--shadow-light);
    transition: all 0.4s ease;
}
.media-item:hover img {
    transform: scale(1.05);
}

/* Resources Section */
.resources-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.resource-item {
    padding: 1.5rem 2rem;
}
.resource-item h3 a {
    font-size: 1.3rem;
}

/* Contact Section */
.contact-form {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem;
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--text-color-medium);
}
.neumorphic-input {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: var(--border-radius);
    background: var(--bg-color);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-color-dark);
    box-shadow: inset calc(var(--shadow-distance) / 2) calc(var(--shadow-distance) / 2) calc(var(--shadow-blur) / 2) var(--shadow-dark), 
                inset calc(-1 * var(--shadow-distance) / 2) calc(-1 * var(--shadow-distance) / 2) calc(var(--shadow-blur) / 2) var(--shadow-light);
    transition: all 0.3s ease;
}
.neumorphic-input:focus {
    outline: none;
    box-shadow: inset var(--shadow-distance) var(--shadow-distance) var(--shadow-blur) var(--shadow-dark), 
                inset calc(-1 * var(--shadow-distance)) calc(-1 * var(--shadow-distance)) var(--shadow-blur) var(--shadow-light),
                0 0 0 3px var(--primary-color-translucent);
}

/* ---------------------------------- */
/*          Footer Styles             */
/* ---------------------------------- */

.main-footer {
    background: #d1d9e6;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--shadow-dark);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}
.footer-col ul {
    list-style: none;
}
.footer-col li {
    margin-bottom: 0.5rem;
}
.footer-col a {
    color: var(--text-color-medium);
}
.footer-col a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--shadow-dark);
    color: var(--text-color-medium);
}

/* ---------------------------------- */
/*      Static & Success Pages        */
/* ---------------------------------- */

.static-page-content {
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 4rem;
    min-height: 80vh;
}
.static-page-content h1 {
    font-size: 3rem;
    margin-bottom: 2rem;
}
.static-page-content h2 {
    font-size: 2rem;
    margin-top: 2.5rem;
    color: var(--primary-color);
}
.static-page-content p, .static-page-content li {
    margin-bottom: 1rem;
}

.success-page-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
}

.success-card {
    max-width: 600px;
}

/* ---------------------------------- */
/*       Responsive Design            */
/* ---------------------------------- */

@media (max-width: 1024px) {
    .section-title {
        font-size: 2.5rem;
    }
    .hero-title {
        font-size: 3.5rem;
    }
    .custom-slider-container {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: 4rem 0;
    }
    .section-title {
        font-size: 2.2rem;
    }
    .hero-title {
        font-size: 2.8rem;
    }
    .hero-subtitle {
        font-size: 1.1rem;
    }

    /* Mobile Navigation */
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--bg-color);
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        transition: right 0.5s ease-in-out;
        padding-top: calc(var(--header-height) + 2rem);
    }
    .main-nav.active {
        right: 0;
    }
    .main-nav .nav-links {
        flex-direction: column;
        align-items: center;
    }
    .main-nav .nav-links li {
        margin: 1.5rem 0;
    }
    .burger-menu {
        display: block;
    }
    .burger-menu.active .burger-bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .burger-menu.active .burger-bar:nth-child(2) {
        opacity: 0;
    }
    .burger-menu.active .burger-bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .event-item {
        flex-direction: column;
        text-align: center;
    }

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