/* Premium CSS Stylesheet for AppHub Portal */

/* Root variables defining two-tone themes */
:root {
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Toast / Accent Colors */
    --color-primary: #6366f1; /* Indigo */
    --color-primary-glow: rgba(99, 102, 241, 0.15);
    --color-secondary: #06b6d4; /* Cyan */
    --color-success: #10b981; /* Emerald */
    --color-warning: #f59e0b; /* Amber */
    --color-danger: #ef4444; /* Rose */
}

/* Dark Theme Variables */
.dark-theme {
    --bg-base-1: #090d16;
    --bg-base-2: #020617;
    --bg-card: rgba(15, 23, 42, 0.55);
    --bg-card-hover: rgba(30, 41, 59, 0.7);
    --border-card: rgba(255, 255, 255, 0.07);
    --border-card-hover: rgba(99, 102, 241, 0.4);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --search-bg: rgba(15, 23, 42, 0.6);
    --search-border: rgba(255, 255, 255, 0.1);
    --search-focus: rgba(99, 102, 241, 0.6);
    
    --button-bg: rgba(255, 255, 255, 0.05);
    --button-border: rgba(255, 255, 255, 0.1);
    --button-text: #f8fafc;
    
    --glass-blur: blur(16px);
    --glow-opacity: 0.12;
}

/* Light Theme Variables */
.light-theme {
    --bg-base-1: #f8fafc;
    --bg-base-2: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --border-card: rgba(15, 23, 42, 0.06);
    --border-card-hover: rgba(99, 102, 241, 0.35);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --search-bg: rgba(255, 255, 255, 0.8);
    --search-border: rgba(15, 23, 42, 0.08);
    --search-focus: rgba(99, 102, 241, 0.4);
    
    --button-bg: rgba(15, 23, 42, 0.04);
    --button-border: rgba(15, 23, 42, 0.08);
    --button-text: #0f172a;
    
    --glass-blur: blur(12px);
    --glow-opacity: 0.05;
}

/* Global Reset & Base Styling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, var(--bg-base-1) 0%, var(--bg-base-2) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    transition: background var(--transition-smooth), color var(--transition-smooth);
}

/* Pulsing background decorative glow spots */
.bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    pointer-events: none;
    z-index: 0;
    opacity: var(--glow-opacity);
    transition: opacity var(--transition-smooth);
}

.bg-glow-1 {
    top: -10%;
    left: -10%;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
}

.bg-glow-2 {
    bottom: -10%;
    right: -10%;
    background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
}

/* Core Layout Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header Component */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-card);
}

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

.logo-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.25);
}

.header-logo h1 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Header Navigation / Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Search Bar Styling */
.search-box {
    position: relative;
    width: 280px;
    transition: var(--transition-smooth);
}

.search-box:focus-within {
    width: 320px;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    width: 18px;
    height: 18px;
    transition: var(--transition-smooth);
}

.search-box:focus-within .search-icon {
    color: var(--color-primary);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border-radius: 12px;
    border: 1px solid var(--search-border);
    background: var(--search-bg);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    outline: none;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    transition: var(--transition-smooth);
}

.search-box input:focus {
    border-color: var(--search-focus);
    box-shadow: 0 0 0 4px var(--color-primary-glow);
}

.clear-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.clear-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.clear-btn svg {
    width: 14px;
    height: 14px;
}

/* General Icon Button styling */
.icon-btn {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--button-border);
    background: var(--button-bg);
    color: var(--button-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.icon-btn:hover {
    background: var(--border-card);
    transform: translateY(-2px);
    border-color: var(--text-muted);
}

/* Light / Dark Mode Toggle Icon Logic */
.dark-theme .sun-icon { display: block; }
.dark-theme .moon-icon { display: none; }
.light-theme .sun-icon { display: none; }
.light-theme .moon-icon { display: block; }

/* Warning Alert Banner (Database offline) */
.alert-banner {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    animation: fadeIn 0.5s ease-out;
}

.alert-icon {
    color: var(--color-warning);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.alert-icon svg {
    width: 24px;
    height: 24px;
}

.alert-content h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-warning);
    margin-bottom: 0.35rem;
}

.alert-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.alert-hint {
    margin-top: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.alert-hint code {
    background: rgba(0, 0, 0, 0.2);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.85rem;
}

.light-theme .alert-hint code {
    background: rgba(0, 0, 0, 0.05);
}

/* Statistics Bar */
.stats-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.inline-icon {
    width: 14px;
    height: 14px;
    vertical-align: middle;
    margin-right: 4px;
    margin-top: -2px;
}

.timezone-badge {
    background: var(--button-bg);
    border: 1px solid var(--border-card);
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

/* Card Grid Layout */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.75rem;
    flex-grow: 1;
    margin-bottom: 3rem;
}

/* Premium Card Components with Glassmorphism */
.app-card {
    position: relative;
    border-radius: 20px;
    transition: var(--transition-smooth);
    height: 100%;
}

.card-inner {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 20px;
    padding: 1.75rem;
    height: 100%;
    overflow: hidden;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    z-index: 1;
}

/* Gradient background glow on card hover */
.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 60%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 0;
}

.card-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Icon Wrap Style */
.app-icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.app-icon-lucide {
    width: 28px;
    height: 28px;
    transition: var(--transition-smooth);
}

.app-icon-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: 6px;
}

/* Card Titles & Notes */
.app-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    letter-spacing: -0.015em;
    line-height: 1.25;
}

.app-notes {
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    flex-grow: 1; /* Pushes the launch link to the bottom */
}

/* Card Action Link styles */
.card-footer {
    margin-top: auto;
}

.launch-btn {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.85rem 1.25rem;
    border-radius: 12px;
    background: var(--button-bg);
    border: 1px solid var(--button-border);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.arrow-icon {
    width: 16px;
    height: 16px;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    color: var(--color-primary);
}

/* Card Interactive Hover States */
.app-card:hover {
    transform: translateY(-6px);
}

.app-card:hover .card-inner {
    border-color: var(--border-card-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12), 0 0 20px rgba(99, 102, 241, 0.1);
}

.app-card:hover .card-glow {
    opacity: 1;
}

.app-card:hover .app-icon-wrapper {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: #ffffff;
    border-color: transparent;
    transform: scale(1.08) rotate(5deg);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.app-card:hover .launch-btn {
    background: var(--color-primary);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.app-card:hover .arrow-icon {
    transform: translate(3px, -3px);
    color: #ffffff;
}

/* No Results State Component */
.no-results-card {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    background: var(--bg-card);
    border: 1px dashed var(--border-card);
    border-radius: 20px;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.no-results-icon {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    stroke-width: 1.25px;
}

.no-results-card h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.no-results-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    max-width: 380px;
}

.btn-primary {
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    background: var(--color-primary);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

/* Footer Section */
.footer-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.825rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-card);
    padding-top: 1.5rem;
    margin-top: auto;
}

.footer-meta {
    font-weight: 500;
}

/* Simple animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Media Queries & Responsive Refinements */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 1rem;
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.25rem;
    }
    
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .search-box {
        flex-grow: 1;
        width: auto;
    }
    
    .search-box:focus-within {
        width: auto;
    }
    
    .grid-container {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    
    .footer-bar {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 0.5rem;
    }
}