/* --- reset --- */

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

/* --- tokens --- */

:root {
    --black: #0a0a0a;
    --frame: #0d0f12;
    --surface: #111318;
    --border: #1a1d24;
    --border-bright: #252830;
    --muted: #4a4f5c;
    --text: #c8ccd4;
    --text-bright: #e4e7ed;
    --green: #00ff88;
    --green-dim: #00cc6a;
    --green-glow: rgba(0, 255, 136, 0.15);
    --green-glow-strong: rgba(0, 255, 136, 0.25);
    --red: #ff4455;
    --red-bg: rgba(255, 68, 85, 0.08);
    --yellow: #ffcc00;
    --dot-red: #ff5f57;
    --dot-yellow: #febc2e;
    --dot-green: #28c840;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --font-body: 'Lexend', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius: 10px;
}

/* --- base --- */

body {
    font-family: var(--font-body);
    background: var(--black);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-x: hidden;
}

/* --- scanline overlay --- */

.scanlines {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    background: repeating-linear-gradient(
        to bottom,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.04) 2px,
        rgba(0, 0, 0, 0.04) 4px
    );
}

/* --- layout --- */

main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

/* --- terminal window --- */

.terminal {
    width: 100%;
    max-width: 420px;
    background: var(--frame);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow:
        0 0 0 1px rgba(0, 255, 136, 0.03),
        0 4px 24px rgba(0, 0, 0, 0.5),
        0 16px 48px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

/* --- terminal chrome bar --- */

.terminal-chrome {
    display: flex;
    align-items: center;
    padding: 0.7rem 1rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.terminal-dots {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
    width: 52px;
}

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

.dot-red {
    background: var(--dot-red);
}

.dot-yellow {
    background: var(--dot-yellow);
}

.dot-green {
    background: var(--dot-green);
}

.terminal-title {
    flex: 1;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--muted);
    letter-spacing: 0.02em;
    user-select: none;
}

.terminal-dots-spacer {
    width: 52px;
    flex-shrink: 0;
}

/* --- terminal body --- */

.terminal-body {
    padding: 2rem 1.75rem 1.5rem;
}

/* --- brand --- */

.brand {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--green);
    text-align: center;
    text-shadow: 0 0 20px var(--green-glow-strong), 0 0 40px rgba(0, 255, 136, 0.08);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cursor {
    display: inline-block;
    width: 2px;
    height: 1.3em;
    background: var(--green);
    margin-left: 4px;
    vertical-align: middle;
    animation: blink 1s step-end infinite;
    box-shadow: 0 0 6px var(--green-glow-strong);
}

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

/* --- tagline --- */

.tagline {
    text-align: center;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 300;
    color: var(--muted);
    margin-top: 0.35rem;
    letter-spacing: 0.02em;
}

/* --- security badge --- */

.security-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1.25rem auto 1.75rem;
    padding: 0.45rem 0.9rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--green-dim);
    background: rgba(0, 255, 136, 0.05);
    border: 1px solid rgba(0, 255, 136, 0.12);
    border-radius: 20px;
    width: fit-content;
    letter-spacing: 0.03em;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    flex-shrink: 0;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 4px var(--green-glow-strong);
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 4px var(--green-glow-strong);
    }
    50% {
        opacity: 0.4;
        box-shadow: 0 0 8px var(--green-glow-strong), 0 0 16px var(--green-glow);
    }
}

.lock-icon {
    flex-shrink: 0;
    color: var(--green-dim);
}

/* --- form --- */

.form-group {
    margin-bottom: 1.1rem;
}

label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--muted);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.prompt {
    color: var(--green);
    font-weight: 700;
}

input {
    width: 100%;
    padding: 0.7rem 0.85rem;
    font-size: 0.9rem;
    font-family: var(--font-mono);
    font-weight: 400;
    border: 1.5px solid var(--border-bright);
    border-radius: 6px;
    background: var(--black);
    color: var(--text-bright);
    transition: border-color 0.15s, box-shadow 0.15s;
}

input::placeholder {
    color: #363a44;
    font-weight: 400;
}

input:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px var(--green-glow), 0 0 12px rgba(0, 255, 136, 0.06);
}

/* --- error --- */

.error-message {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--red);
    min-height: 1.25rem;
    margin-bottom: 0.4rem;
    opacity: 0;
    transition: opacity 0.2s;
    padding: 0;
    background: transparent;
    border-radius: 4px;
}

.error-message.visible {
    opacity: 1;
    padding: 0.5rem 0.7rem;
    background: var(--red-bg);
    border: 1px solid rgba(255, 68, 85, 0.15);
}

/* --- button --- */

button {
    width: 100%;
    padding: 0.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--black);
    background: var(--green);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.15s, box-shadow 0.15s;
    box-shadow: 0 0 16px var(--green-glow);
}

button:hover {
    background: #00e67a;
    box-shadow: 0 0 24px var(--green-glow-strong), 0 0 48px rgba(0, 255, 136, 0.1);
}

button:active {
    background: #00cc6a;
    box-shadow: 0 0 8px var(--green-glow);
}

.btn-arrow {
    flex-shrink: 0;
    stroke: var(--black);
}

/* --- forgot link --- */

.forgot-link {
    display: block;
    text-align: center;
    margin-top: 0.9rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: color 0.15s;
}

.forgot-link:hover {
    color: var(--green);
}

/* --- session info bar --- */

.session-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 400;
    color: #353a44;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    user-select: none;
}

.session-bar .sep {
    color: #252830;
}

/* --- footer --- */

footer {
    text-align: center;
    padding: 1.5rem 1rem;
    font-size: 0.75rem;
    color: #353a44;
    font-family: var(--font-mono);
}

footer p {
    margin-bottom: 0.4rem;
}

footer nav a {
    color: #353a44;
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.15s;
}

footer nav a:hover {
    color: var(--green-dim);
}

/* --- responsive --- */

@media (max-width: 480px) {
    .terminal {
        max-width: 100%;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .terminal-chrome {
        border-radius: 0;
    }

    .terminal-body {
        padding: 1.5rem 1.25rem 1.25rem;
    }

    main {
        align-items: flex-start;
        padding-top: 0;
        padding-left: 0;
        padding-right: 0;
    }

    .brand {
        font-size: 1.4rem;
    }

    .session-bar {
        flex-wrap: wrap;
        gap: 0.3rem 0.5rem;
    }
}

@media (max-width: 360px) {
    .terminal-title {
        font-size: 0.6rem;
    }

    .brand {
        font-size: 1.25rem;
        letter-spacing: 0.12em;
    }

    .security-badge {
        font-size: 0.65rem;
        padding: 0.4rem 0.7rem;
    }
}