/* CSS Variables for design system */
:root {
    --bg-primary: #090b11;
    --bg-secondary: #121622;
    --bg-card: rgba(20, 25, 40, 0.65);
    --border-card: rgba(255, 255, 255, 0.08);
    --border-card-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent-default: #6366f1;
    --accent-default-rgb: 99, 102, 241;
    
    --glass-blur: 16px;
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --card-shadow-hover: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --transition-speed: 0.3s;
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light Theme Variables */
body.light-theme {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.7);
    --border-card: rgba(0, 0, 0, 0.06);
    --border-card-hover: rgba(0, 0, 0, 0.12);
    
    --text-primary: #1e293b;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --card-shadow: 0 8px 30px 0 rgba(31, 38, 135, 0.06);
    --card-shadow-hover: 0 12px 35px 0 rgba(31, 38, 135, 0.12);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

/* Background glows for premium look */
.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
    transition: opacity var(--transition-speed) ease;
}

body.light-theme .bg-glow {
    opacity: 0.1;
}

.bg-glow-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, #4f46e5 0%, transparent 70%);
}

.bg-glow-2 {
    bottom: -10%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, #ec4899 0%, transparent 70%);
}

.bg-glow-3 {
    top: 40%;
    left: 35%;
    width: 30vw;
    height: 30vw;
    background: radial-gradient(circle, #06b6d4 0%, transparent 70%);
}

/* Header style */
.app-header {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background-color: rgba(var(--bg-secondary) == #ffffff ? 255 : 9, 11, 17, 0.6);
    border-bottom: 1px solid var(--border-card);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-speed) ease;
}

body.light-theme .app-header {
    background-color: rgba(255, 255, 255, 0.65);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.back-portal-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0 1rem;
    height: 40px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 600;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-speed) ease;
    cursor: pointer;
    flex-shrink: 0;
}

.back-portal-btn i {
    font-size: 0.85rem;
    transition: transform var(--transition-speed) ease;
}

.back-portal-btn:hover {
    transform: translateX(-3px);
    background: var(--bg-secondary);
    border-color: var(--accent-default);
    color: var(--accent-default);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.25);
}

.back-portal-btn:hover i {
    transform: translateX(-3px);
}

.back-portal-btn .btn-text-short {
    display: none;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
    color: white;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

.logo-text h1 {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.4rem;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text h1 span {
    background: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-left: 0.15rem;
}

.logo-text p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.theme-toggle-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    transition: all var(--transition-speed) ease;
}

.theme-toggle-btn:hover {
    transform: translateY(-2px);
    border-color: var(--border-card-hover);
    background: var(--bg-secondary);
}

/* Main Layout */
.main-content {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 2rem;
    flex-grow: 1;
}

/* Control Panel (Search and Filter) */
.control-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.search-bar-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.search-icon {
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: color var(--transition-speed) ease;
}

#search-input {
    width: 100%;
    padding: 1.1rem 1.5rem 1.1rem 3.2rem;
    border-radius: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    transition: all var(--transition-speed) ease;
}

#search-input:focus {
    outline: none;
    border-color: var(--accent-default);
    box-shadow: 0 0 0 3px rgba(var(--accent-default-rgb), 0.2);
    background-color: var(--bg-secondary);
}

#search-input:focus + .search-icon {
    color: var(--accent-default);
}

.clear-search {
    position: absolute;
    right: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    transition: color var(--transition-speed) ease;
}

.clear-search:hover {
    color: var(--text-primary);
}

/* Category Filters */
.filter-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.filter-btn {
    padding: 0.6rem 1.3rem;
    border-radius: 99px;
    border: 1px solid var(--border-card);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    transition: all var(--transition-speed) ease;
}

.filter-btn:hover {
    border-color: var(--border-card-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.filter-btn.active {
    background: var(--accent-default);
    color: white;
    border-color: var(--accent-default);
    box-shadow: 0 4px 15px rgba(var(--accent-default-rgb), 0.3);
}

/* Grid layout for cards */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    transition: all var(--transition-speed) ease;
}

/* Card Styling - DYNAMIC THEME SYSTEM */
.app-card {
    border-radius: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    overflow: hidden;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: var(--card-shadow);
    transition: transform 0.4s var(--ease-bounce), border-color var(--transition-speed) ease, box-shadow 0.4s ease;
    height: 100%;
    position: relative;
}

/* Beautiful dynamic background hover and glow effects per card */
.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--app-theme);
    transition: height 0.3s ease;
}

.app-card:hover {
    transform: translateY(-8px) scale(1.01);
    border-color: rgba(var(--app-theme-rgb), 0.3);
    box-shadow: 0 15px 35px rgba(var(--app-theme-rgb), 0.15), var(--card-shadow-hover);
}

.app-card:hover::before {
    height: 8px;
}

.card-inner {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: space-between;
}

/* Card Header */
.app-header-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.app-icon-container {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(var(--app-theme-rgb), 0.1);
    color: var(--app-theme);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    border: 1px solid rgba(var(--app-theme-rgb), 0.25);
    transition: all var(--transition-speed) ease;
}

.app-card:hover .app-icon-container {
    background: var(--app-theme);
    color: white;
    transform: scale(1.05) rotate(5deg);
    box-shadow: 0 6px 20px rgba(var(--app-theme-rgb), 0.3);
}

.app-badge {
    padding: 0.3rem 0.75rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--app-theme);
    background: rgba(var(--app-theme-rgb), 0.08);
    border: 1px solid rgba(var(--app-theme-rgb), 0.15);
    letter-spacing: 0.3px;
}

/* Card Body */
.app-body {
    flex-grow: 1;
    margin-bottom: 1.75rem;
}

.app-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    transition: color var(--transition-speed) ease;
}

.app-card:hover .app-title {
    color: var(--app-theme);
}

.app-description {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 1.25rem;
}

.app-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.app-tech-tags span {
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-card);
    color: var(--text-muted);
}

body.light-theme .app-tech-tags span {
    background: rgba(0, 0, 0, 0.02);
}

/* Card Footer & Launch Button */
.launch-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.8rem;
    border-radius: 12px;
    border: 1px solid rgba(var(--app-theme-rgb), 0.2);
    background: rgba(var(--app-theme-rgb), 0.02);
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.app-card:hover .launch-btn {
    background: var(--app-theme);
    border-color: var(--app-theme);
    color: white;
    box-shadow: 0 4px 15px rgba(var(--app-theme-rgb), 0.35);
}

.launch-btn i {
    font-size: 0.8rem;
    transition: transform var(--transition-speed) ease;
}

.app-card:hover .launch-btn i {
    transform: translate(2px, -2px);
}

/* Empty State Styling */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: rgba(var(--accent-default-rgb), 0.3);
}

.empty-state h3 {
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

/* Footer style */
.app-footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border-card);
    color: var(--text-muted);
    font-size: 0.85rem;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .main-content {
        padding: 2rem 1rem;
    }
    
    .header-container {
        padding: 1rem;
    }

    .header-left {
        gap: 0.85rem;
    }

    .back-portal-btn {
        padding: 0 0.75rem;
        font-size: 0.82rem;
        gap: 0.4rem;
    }

    .back-portal-btn .btn-text-full {
        display: none;
    }

    .back-portal-btn .btn-text-short {
        display: inline;
    }
    
    .logo-text h1 {
        font-size: 1.2rem;
    }
    
    .control-panel {
        margin-bottom: 2rem;
    }
}

@media (max-width: 460px) {
    .back-portal-btn .btn-text-short {
        display: none;
    }

    .back-portal-btn {
        width: 40px;
        padding: 0;
        justify-content: center;
    }

    .logo-text p {
        display: none;
    }
}