:root {
    --primary-color: #2c3e50;
    --text-color: #f0f0f0;
    --card-bg: rgba(255, 255, 255, 0.15);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    --transition-time: 0.3s;
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    overflow-x: hidden;
    background: radial-gradient(#3e3b3d, #1f1013);
    min-height: 100vh;
    margin: 0;
    height: 100vh;
}

/* Animated background lights */
.light {
    position: absolute;
    width: 0px;
    opacity: .75;
    background-color: white;
    box-shadow: #e9f1f1 0px 0px 20px 2px;
    opacity: 0;
    top: 100vh;
    bottom: 0px;
    left: 0px;
    right: 0px;
    margin: auto;
    transition: background-color 0.5s ease, box-shadow 0.5s ease;
}

.x1{
  animation: floatUp 4s infinite linear;
  transform: scale(1.0);
}

.x2{
  animation: floatUp 7s infinite linear;
  transform: scale(1.6);
  left: 15%;
}

.x3{
  animation: floatUp 2.5s infinite linear;
  transform: scale(.5);
  left: -15%;
}

.x4{
  animation: floatUp 4.5s infinite linear;
  transform: scale(1.2);
  left: -34%;
}

.x5{
  animation: floatUp 8s infinite linear;
  transform: scale(2.2);
  left: -57%;
}

.x6{
  animation: floatUp 3s infinite linear;
  transform: scale(.8);
  left: -81%;
}

.x7{
  animation: floatUp 5.3s infinite linear;
  transform: scale(3.2);
  left: 37%;
}

.x8{
  animation: floatUp 4.7s infinite linear;
  transform: scale(1.7);
  left: 62%;
}

.x9{
  animation: floatUp 4.1s infinite linear;
  transform: scale(0.9);
  left: 85%;
}

@keyframes floatUp{
  0%{top: 100vh; opacity: 0;}
  25%{opacity: 1;}
  50%{top: 0vh; opacity: .8;}
  75%{opacity: 1;}
  100%{top: -100vh; opacity: 0;}
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.8) 100%);
    z-index: -1;
    transition: background var(--transition-time) ease-in-out;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 60px;
    padding: 30px 0;
    position: relative;
}

header:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--text-color);
}

h1 {
    font-size: 3rem;
    margin: 0;
    font-weight: 600;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    letter-spacing: 1px;
}

.subtitle {
    font-size: 1rem;
    opacity: 0.7;
    margin-top: 10px;
}

.apps-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.app-card {
    background-color: var(--card-bg);
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    padding: 25px;
    transition: transform var(--transition-time), box-shadow var(--transition-time);
    position: relative;
    overflow: hidden;
    color: var(--text-color);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    cursor: pointer;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    text-decoration: none;
}

.app-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.app-icon {
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: var(--transition-time);
    min-width: 65px;
    height: 65px;
    /* Color will be applied via JS based on data-color */
}

.app-card:hover .app-icon {
    transform: scale(1.1) rotate(5deg);
}

.app-content {
    flex: 1;
}

h2 {
    margin: 0 0 10px;
    font-size: 1.5rem;
    font-weight: 600;
}

.description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
    line-height: 1.6;
    font-size: 0.95rem;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Card already acts as a button, no need for separate button styles */

/* Footer */
footer {
    margin-top: 60px;
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .apps-container {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 2.2rem;
    }
}

/* Animation for card entrance */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}