/* Landing Page Styles - Hylst Cours Memos */

:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --border-light: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;

    /* Brand Colors */
    --php-color: #8993be;
    --html-color: #e34f26;
    --css-color: #2965f1;
    --js-color: #f7df1e;
    --python-color: #3776ab;
    --net-color: #1abc9c;
    --java-color: #f89820;

    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background Animation */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 10% 20%, rgba(41, 101, 241, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(227, 79, 38, 0.15) 0%, transparent 40%);
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 4rem;
    padding-top: 3rem;
    animation: fadeInDown 1s ease-out;
}

/* Header Transformations */
h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, #a855f7 25%, #3b82f6 50%, #10b981 75%, #fff 100%);
    background-size: 400% 400%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -2px;
    animation: gradientFlow 8s infinite linear, glow-text 4s infinite ease-in-out;
}

@keyframes gradientFlow {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.hover-text {
    display: inline-block;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: default;
    position: relative;
}

.hover-text:hover {
    color: var(--text-primary);
    transform: scale(1.05) translateY(-2px);
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.4);
    letter-spacing: 1px;
}

/* Author & Footer Polish */
.author-contact {
    margin: 1rem 0;
    font-size: 1.1rem;
}

.author-contact a {
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}

.author-contact a:hover {
    border-color: var(--text-primary);
}

.announcement-section {
    margin-top: 4rem;
    margin-bottom: 4rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    text-align: center;
    backdrop-filter: blur(5px);
    animation: fadeInUp 1s ease-out 0.5s both;
}

.announcement-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

.announcement-section strong {
    color: var(--text-primary);
    background: linear-gradient(90deg, #a855f7, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    perspective: 1000px;
}

/* Card Styles */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    text-decoration: none;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
    height: 100%;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    z-index: 1;
}

/* Background Illustration Layer */
.card-bg-illu {
    position: absolute;
    top: -20%;
    left: -20%;
    width: 140%;
    height: 140%;
    opacity: 0.15;
    filter: blur(40px);
    z-index: -1;
    pointer-events: none;
    transition: transform 0.2s ease-out, opacity 0.3s ease;
}

.card:hover .card-bg-illu {
    opacity: 0.3;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    z-index: 2;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--glass-shadow);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Card Content */
.icon-wrapper {
    width: 130px;
    height: 130px;
    margin-bottom: 1.5rem;
    transition: transform 0.1s ease-out;
    filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.1));
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.card h2 {
    font-size: 1.6rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    z-index: 3;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    z-index: 3;
    line-height: 1.4;
}

/* Specific Card Glows */
.card[data-tech="php"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 20px var(--php-color));
}

.card[data-tech="html"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 20px var(--html-color));
}

.card[data-tech="css"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 20px var(--css-color));
}

.card[data-tech="js"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 20px var(--js-color));
}

.card[data-tech="python"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 20px var(--python-color));
}

.card[data-tech="net"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 20px var(--net-color));
}

.card[data-tech="java"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 20px var(--java-color));
}

/* Tech-Specific Styles & Data Art */
.card[data-tech="php"] .card-bg-illu {
    background: radial-gradient(circle, var(--php-color) 0%, transparent 70%);
}

.card[data-tech="html"] .card-bg-illu {
    background: radial-gradient(circle, var(--html-color) 0%, transparent 70%);
}

.card[data-tech="css"] .card-bg-illu {
    background: radial-gradient(circle, var(--css-color) 0%, transparent 70%);
}

.card[data-tech="js"] .card-bg-illu {
    background: radial-gradient(circle, var(--js-color) 0%, transparent 70%);
}

.card[data-tech="python"] .card-bg-illu {
    background: radial-gradient(circle, var(--python-color) 0%, transparent 70%);
}

.card[data-tech="net"] .card-bg-illu {
    background: radial-gradient(circle, var(--net-color) 0%, transparent 70%);
}

.card[data-tech="java"] .card-bg-illu {
    background: radial-gradient(circle, var(--java-color) 0%, transparent 70%);
}

/* Animated Data Art for Data/IA module */
.data-art-overlay {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 2px 2px, rgba(255, 255, 255, 0.05) 1px, transparent 0);
    background-size: 20px 20px;
    mask-image: linear-gradient(to bottom, black, transparent);
    opacity: 0.5;
}

.card[data-tech="python-data"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 25px #a855f7);
}

.card[data-tech="python-web"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 25px #22c55e);
}

/* Disabled Cards */
.card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(0.8);
}

.card.disabled:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border-light);
}

.badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

/* Footer Author Section */
.author-section {
    margin-top: 5rem;
    padding: 3rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-light);
    border-radius: 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.author-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.author-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.author-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1e293b, #0f172a);
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    border: 2px solid var(--text-primary);
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: float 4s infinite ease-in-out;
}

.author-img:hover {
    transform: scale(1.2) rotate(10deg);
    filter: drop-shadow(0 0 25px rgba(168, 85, 247, 0.5));
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0);
    }

    50% {
        transform: translateY(-10px) rotate(-5deg);
    }
}

.author-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.author-bio {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.social-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.2s;
}

.social-links a:hover {
    color: var(--text-primary);
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    opacity: 0;
    /* Hidden by default for JS reveal */
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

/* CogniAI Card Styles */
.card[data-tech="cogniai"]:hover .icon-wrapper {
    filter: drop-shadow(0 0 20px #d946ef);
}

.card[data-tech="cogniai"] .card-bg-illu {
    background: radial-gradient(circle, #d946ef 0%, transparent 70%);
}