/* 
   AI REGEX GENERATOR - EXPERT WEB TOOLS
   Theme: 2025 Glassmorphism
*/

/* --- Fonts --- */
@font-face { font-family: 'Inter'; src: url('/fonts/inter-v20-latin-regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Orbitron'; src: url('/fonts/orbitron-v35-latin-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Roboto Mono'; src: url('/fonts/roboto-mono-v31-latin-regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }

:root {
    --bg-dark: #0a0a0f;
    --primary-accent: #3b82f6;
    --secondary-accent: #8b5cf6;
    --text-main: #ffffff;
    --text-muted: #94a3b8;
    --card-bg: rgba(25, 25, 35, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --input-bg: rgba(255, 255, 255, 0.05);
    
    /* Highlight Color */
    --highlight-bg: rgba(59, 130, 246, 0.4);
    --highlight-text: #fff;

    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-code: 'Roboto Mono', monospace;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.background-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(139, 92, 246, 0.08) 0%, rgba(10, 10, 15, 0) 50%);
    z-index: -1;
    pointer-events: none;
}

/* --- Header --- */
.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}
.back-btn {
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s;
}
.back-btn:hover { color: var(--primary-accent); }
.logo { font-family: var(--font-heading); font-size: 1.2rem; }
.logo span { color: var(--secondary-accent); }

/* --- Main Content --- */
.main-content {
    flex-grow: 1;
    padding: 2rem 5%;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.tool-intro { text-align: center; margin-bottom: 2rem; }
.tool-intro h1 { font-family: var(--font-heading); margin-bottom: 0.5rem; font-size: 2rem; }
.tool-intro p { color: var(--text-muted); }

/* Examples */
.example-prompts {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 2rem;
}
.example-btn {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}
.example-btn:hover { border-color: var(--primary-accent); color: #fff; background: rgba(255,255,255,0.05); }

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.card h2 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.card h2 i { color: var(--primary-accent); }

/* Input Area */
textarea, input[type="text"], input[type="number"] {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 12px;
    color: #fff;
    font-family: var(--font-code);
    font-size: 1rem;
    outline: none;
    resize: none;
}
textarea:focus, input:focus { border-color: var(--primary-accent); }

/* Advanced Options */
.advanced-controls { margin: 1rem 0; }
.toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.toggle-btn:hover { color: #fff; }

.advanced-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 1rem;
}
.checkbox-wrapper {
    grid-column: span 2;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.primary-btn {
    width: 100%;
    background: var(--primary-accent);
    color: #fff;
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}
.primary-btn:hover { background: #2563eb; }
.primary-btn:disabled { background: #4b5563; cursor: not-allowed; }

/* Output Area */
.regex-display {
    display: flex;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 12px;
    align-items: center;
    gap: 10px;
}
.regex-display code {
    flex: 1;
    font-family: var(--font-code);
    color: #a5f3fc;
    word-break: break-all;
}
.icon-btn {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
}
.icon-btn:hover { color: #fff; border-color: #fff; }

/* Live Tester (Layering Trick) */
.tester-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.badge { font-size: 0.8rem; background: var(--highlight-bg); padding: 2px 8px; border-radius: 4px; }

.tester-wrapper {
    position: relative;
    width: 100%;
    height: 150px;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    background: var(--bg-dark);
}

.tester-layer {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    padding: 12px;
    font-family: var(--font-code);
    font-size: 1rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
    border: none;
    background: transparent;
    overflow: auto;
}

.output-layer {
    color: transparent; /* Text is invisible so only highlights show */
    z-index: 1;
    pointer-events: none; /* Let clicks pass through to input */
}

.input-layer {
    color: #fff;
    z-index: 2;
    background: transparent; /* Transparent so highlights show behind */
    caret-color: #fff;
}

mark {
    background-color: var(--highlight-bg);
    color: transparent;
    border-radius: 2px;
}

.error-msg {
    margin-top: 1rem;
    padding: 10px;
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border-radius: 6px;
    text-align: center;
}

.hidden { display: none !important; }

footer { text-align: center; padding: 3rem 0; color: var(--text-muted); font-size: 0.9rem; border-top: 1px solid var(--card-border); margin-top: 3rem; }
footer a { color: #fff; text-decoration: none; }

@media (max-width: 600px) {
    .advanced-grid { grid-template-columns: 1fr; }
}