/* =========================================
   CLEAN BUILD v11 - 2026-02-05
   ========================================= */

/* --- Variables (Theme System) --- */
:root {
    /* Default: Dark Mode (IOP Orange Dark) */
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-card: #252525;
    
    --accent-primary: #FF8C00;
    --accent-secondary: #FF4500;
    --accent-gradient: linear-gradient(135deg, #FF8C00 0%, #FF4500 100%);
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    
    --border-radius: 12px;
    --glow: 0 0 20px rgba(255, 140, 0, 0.3);
}

/* Light Mode Override */
[data-theme="light"] {
    --bg-primary: #FFF8F0; /* Very light orange tint */
    --bg-secondary: #FFFFFF;
    --bg-card: #FFFFFF;
    
    /* Brighter, more vivid orange for light mode */
    --accent-primary: #FF6600;
    --accent-secondary: #FF4500;
    --accent-gradient: linear-gradient(135deg, #FF9933 0%, #FF4500 100%);
    
    --text-primary: #2D2D2D; /* Dark gray for readability */
    --text-secondary: #666666;
    
    --border-color: rgba(255, 140, 0, 0.15);
    --card-shadow: 0 10px 30px rgba(255, 140, 0, 0.15); /* Soft orange shadow */
    --glow: 0 0 20px rgba(255, 140, 0, 0.15);
}

/* Light Mode FAB Capsule Override */
[data-theme="light"] .fab-item {
    background: linear-gradient(135deg, #FF9933 0%, #FF4500 100%) !important;
    border: none !important;
    box-shadow: 0 5px 15px rgba(255, 140, 0, 0.4) !important;
}
[data-theme="light"] .fab-content h3,
[data-theme="light"] .fab-content p {
    color: #FFFFFF !important;
}
[data-theme="light"] .fab-btn-icon {
    background: rgba(255, 255, 255, 0.2) !important;
    border-color: rgba(255, 255, 255, 0.4) !important;
    box-shadow: none !important;
}
[data-theme="light"] .fab-item:active {
    filter: brightness(0.9);
}

/* --- Reset & Base --- */
* { margin: 0; padding: 0; box-sizing: border-box; transition: background-color 0.3s, color 0.3s, border-color 0.3s; }

body {
    font-family: 'Segoe UI', 'Microsoft JhengHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    /* Use variables for gradient to support switching */
    background-image: 
        radial-gradient(ellipse at top, rgba(255, 69, 0, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at bottom, rgba(255, 140, 0, 0.03) 0%, transparent 50%);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 30px 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- Header --- */
header { text-align: center; padding: 30px 0 40px; }
.logo { font-size: 3.5rem; margin-bottom: 12px; animation: float 3s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
header h1 {
    font-size: 2.2rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    font-weight: 700;
}
.subtitle { color: var(--text-secondary); font-size: 1rem; letter-spacing: 2px; }

/* --- Main Tools Grid --- */
main { flex: 1; }
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* Tool Card */
.tool-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 24px;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}
.tool-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--accent-gradient); opacity: 0; transition: opacity 0.3s;
}
.tool-card:hover { transform: translateY(-6px); box-shadow: var(--card-shadow), var(--glow); border-color: var(--accent-primary); }
.tool-card:hover::before { opacity: 1; }
.tool-card.coming-soon { opacity: 0.6; cursor: default; }
.tool-card.coming-soon:hover { transform: none; box-shadow: var(--card-shadow); }

.tool-icon { font-size: 2.2rem; margin-bottom: 16px; filter: drop-shadow(0 0 5px rgba(255, 140, 0, 0.2)); }
.tool-card h2 { font-size: 1.2rem; margin-bottom: 8px; color: var(--text-primary); }
.tool-card p { color: var(--text-secondary); font-size: 0.9rem; flex: 1; margin-bottom: 16px; line-height: 1.5; }
.tool-tag {
    display: inline-block; padding: 4px 12px; background: rgba(255, 140, 0, 0.1);
    border-radius: 20px; font-size: 0.8rem; color: var(--accent-primary);
    border: 1px solid rgba(255, 140, 0, 0.3);
}

/* --- Footer --- */
footer { text-align: center; padding: 40px 0 20px; color: var(--text-secondary); font-size: 0.85rem; }


/* =========================================
   DESKTOP SPECIFIC (> 768px)
   ========================================= */
@media (min-width: 769px) {
    /* Show Desktop Section */
    .ecosystem-section { display: block; }
    /* Hide Mobile FAB */
    .fab-container { display: none; }
}

/* Desktop Ecosystem Section Style */
.ecosystem-section {
    margin-top: 50px;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}
.ecosystem-title {
    font-size: 1.3rem; margin-bottom: 20px; color: var(--text-primary);
    display: flex; align-items: center; gap: 10px; font-weight: 600;
}
.ecosystem-title::before {
    content: ''; display: block; width: 4px; height: 20px;
    background: var(--accent-gradient); border-radius: 2px;
}
.ecosystem-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px;
}
.eco-card {
    background: rgba(255, 255, 255, 0.03); /* Keep subtle transparency */
    border: 1px solid var(--border-color);
    border-radius: 12px; padding: 16px;
    display: flex; align-items: center; gap: 14px;
    text-decoration: none; color: var(--text-secondary);
    transition: all 0.3s ease;
}
/* Light mode specific adjustment for eco-card background */
[data-theme="light"] .eco-card {
    background: #FFFFFF;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.eco-card:hover {
    background: var(--bg-card); transform: translateY(-4px);
    border-color: var(--accent-primary); box-shadow: var(--card-shadow);
}
.eco-card.featured {
    background: linear-gradient(135deg, rgba(255, 140, 0, 0.08) 0%, rgba(255, 69, 0, 0.08) 100%);
    border: 1px solid rgba(255, 140, 0, 0.3);
}
.eco-card.featured:hover { box-shadow: 0 0 20px rgba(255, 140, 0, 0.15); }
.eco-icon {
    font-size: 1.6rem; min-width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(0,0,0,0.05); border-radius: 10px;
    color: var(--text-primary);
}
.eco-content h3 { color: var(--text-primary); font-size: 1rem; margin-bottom: 3px; font-weight: 600; }
.eco-content p { font-size: 0.8rem; margin: 0; line-height: 1.4; color: var(--text-secondary); }


/* =========================================
   MOBILE SPECIFIC (< 768px)
   ========================================= */
@media (max-width: 768px) {
    /* Hide Desktop Section */
    .ecosystem-section { display: none !important; }
    
    /* Layout Adjustments */
    header { padding: 24px 0 30px; }
    .logo { font-size: 2.5rem; }
    header h1 { font-size: 1.8rem; }
    .tools-grid { grid-template-columns: 1fr; }
    .tool-card { padding: 20px; }

    /* FAB Container Setup */
    .fab-container {
        display: flex; /* Show only on mobile */
        position: fixed; bottom: 30px; right: 30px; z-index: 1000;
        flex-direction: column; align-items: flex-end;
    }

    /* FAB Trigger Button (+) */
    .fab-main {
        width: 60px; height: 60px;
        background: var(--accent-gradient);
        border-radius: 50%;
        display: flex; align-items: center; justify-content: center;
        font-size: 1.8rem; color: white;
        box-shadow: 0 5px 20px rgba(255, 69, 0, 0.4);
        cursor: pointer;
        transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
        border: 2px solid rgba(255,255,255,0.2);
        position: relative; z-index: 10;
    }

    /* FAB Menu List */
    .fab-menu {
        position: absolute; bottom: 75px; right: 0;
        display: flex; flex-direction: column; gap: 12px;
        align-items: flex-end;
        width: max-content;
        max-width: calc(100vw - 80px); /* Responsive width limit */
        
        /* Initial State: HIDDEN */
        opacity: 0; pointer-events: none; transform: translateY(20px);
        transition: all 0.3s ease;
        z-index: 9;
    }

    /* --- CAPSULE ITEM STYLE (Native, no override) --- */
    .fab-item {
        display: flex; align-items: center; justify-content: flex-end;
        text-decoration: none; color: white;
        
        /* Capsule Styling */
        background: rgba(26, 26, 46, 0.95);
        backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
        border: 1px solid rgba(255,255,255,0.15);
        border-radius: 40px;
        padding: 8px 8px 8px 24px; /* Space for text & icon */
        box-shadow: 0 4px 15px rgba(0,0,0,0.4);
        
        /* Animation Base */
        transform: scale(0.9); transition: all 0.2s;
    }

    .fab-content {
        text-align: right; margin-right: 12px;
    }
    .fab-content h3 { font-size: 0.95rem; color: var(--text-primary); margin-bottom: 2px; }
    .fab-content p { font-size: 0.75rem; color: var(--text-secondary); margin: 0; }

    .fab-btn-icon {
        width: 44px; height: 44px; flex-shrink: 0;
        background: var(--bg-secondary); border-radius: 50%;
        display: flex; align-items: center; justify-content: center;
        font-size: 1.2rem;
        border: 1px solid rgba(255,255,255,0.1);
        box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
    }

    /* Interaction: Active State (Applied via JS only) */
    .fab-container.active .fab-main {
        transform: rotate(45deg);
        box-shadow: 0 0 30px rgba(255, 69, 0, 0.6);
    }
    
    .fab-container.active .fab-menu {
        opacity: 1; pointer-events: auto; transform: translateY(0);
    }
    
    .fab-container.active .fab-item {
        transform: scale(1);
    }
    
    /* Active styling for tapped items */
    .fab-item:active {
        background: var(--bg-card); border-color: var(--accent-primary);
    }
    .fab-item:active .fab-btn-icon {
        background: var(--accent-gradient);
    }
}