/* ============================================
   SIGNAL LOST - Challenge Hunt Styles
   ============================================ */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-terminal: #0d1117;
    --text-primary: #e0e0e0;
    --text-secondary: #8888aa;
    --text-dim: #555566;
    --accent: #00ff88;
    --accent-dim: #00cc6a;
    --accent-glow: rgba(0, 255, 136, 0.3);
    --danger: #ff3355;
    --warning: #ffaa00;
    --terminal-green: #00ff88;
    --terminal-border: #1a1a2e;
    --node-locked: #333344;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Scanline overlay */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
}

/* ---- Gate Pages ---- */
.gate-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

.gate-box {
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.gate-symbol {
    font-size: 3rem;
    color: var(--accent);
    text-shadow: 0 0 30px var(--accent-glow);
    margin-bottom: 2rem;
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { text-shadow: 0 0 20px var(--accent-glow); opacity: 0.7; }
    50% { text-shadow: 0 0 40px var(--accent-glow), 0 0 60px var(--accent-glow); opacity: 1; }
}

.gate-message {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 2rem;
    line-height: 1.8;
    letter-spacing: 0.05em;
}

.gate-form {
    display: flex;
    gap: 0;
    justify-content: center;
}

.gate-input {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--terminal-border);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1rem;
    padding: 0.5rem 0;
    width: 250px;
    text-align: center;
    outline: none;
    transition: border-color 0.3s;
    letter-spacing: 0.1em;
}

.gate-input:focus {
    border-color: var(--accent);
}

.gate-input::placeholder {
    color: var(--text-dim);
}

.gate-submit {
    background: transparent;
    border: none;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: text-shadow 0.2s;
}

.gate-submit:hover {
    text-shadow: 0 0 10px var(--accent-glow);
}

.gate-error {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: 1.5rem;
    opacity: 0.8;
}

/* ---- Challenge Pages ---- */
.challenge-container {
    max-width: 700px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.challenge-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.challenge-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 0.3em;
}

.challenge-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 1.5rem 0;
    font-size: 0.9rem;
    font-family: var(--font-mono);
}

.puzzle-area {
    background: var(--bg-secondary);
    border: 1px solid var(--terminal-border);
    border-radius: 8px;
    padding: 2rem;
    margin: 2rem 0;
}

/* Terminal box */
.terminal-box {
    background: var(--bg-terminal);
    border: 1px solid var(--terminal-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background: #1a1a2e;
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27c93f; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-left: 0.5rem;
}

.terminal-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 2;
}

.prompt {
    color: var(--accent);
    margin-right: 0.5rem;
}

.highlight {
    color: var(--accent);
    font-weight: 700;
}

/* Answer section */
.answer-section {
    margin: 2.5rem 0;
    text-align: center;
}

.answer-input {
    background: var(--bg-terminal);
    border: 1px solid var(--terminal-border);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 4px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    outline: none;
    transition: border-color 0.3s;
    letter-spacing: 0.05em;
}

.answer-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

.answer-input::placeholder {
    color: var(--text-dim);
}

.submit-btn {
    background: transparent;
    border: 1px solid var(--terminal-border);
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 0.6rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 1rem;
    transition: all 0.2s;
    letter-spacing: 0.1em;
}

.submit-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.feedback {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    margin-top: 1rem;
    min-height: 1.5rem;
}

.feedback.success {
    color: var(--accent);
}

.feedback.error {
    color: var(--danger);
    opacity: 0.8;
}

/* ---- Cipher/Puzzle styles ---- */
.cipher-text {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    line-height: 2;
    word-break: break-all;
    text-align: center;
}

.morse-text {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    color: var(--accent);
    letter-spacing: 0.2em;
    word-spacing: 1rem;
    text-align: center;
    line-height: 2.5;
}

.hex-text {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-align: center;
    line-height: 2;
    word-spacing: 0.8rem;
}

.binary-text {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-align: center;
    line-height: 2;
}

.code-block {
    background: var(--bg-terminal);
    border: 1px solid var(--terminal-border);
    border-radius: 4px;
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    overflow-x: auto;
    line-height: 1.8;
}

.dim {
    color: var(--text-dim);
}

.glow {
    color: #fff;
    text-shadow: 0 0 10px var(--accent-glow), 0 0 30px var(--accent-glow), 0 0 60px var(--accent-glow);
    font-size: 1.3em;
    letter-spacing: 0.15em;
}

.blink {
    animation: blink 1.2s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Hidden elements - invisible until inspected */
.void {
    color: transparent;
    font-size: 1px;
    line-height: 0;
    user-select: all;
}

/* Grid layout for visual puzzles */
.puzzle-grid {
    display: grid;
    gap: 2px;
    margin: 1rem auto;
    max-width: 400px;
}

.puzzle-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    border: 1px solid var(--terminal-border);
    transition: all 0.2s;
}

/* Reveal animation */
.reveal {
    opacity: 0;
    animation: revealIn 0.8s ease forwards;
}

@keyframes revealIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 600px) {
    .challenge-container {
        padding: 1.5rem 1rem;
    }

    .terminal-body {
        padding: 1rem;
        font-size: 0.8rem;
    }

    .gate-input {
        width: 200px;
    }

    .puzzle-area {
        padding: 1rem;
    }
}