/* --- RESET & VARIABLES --- */
:root {
    --bg-color: #0f172a;
    /* Slate 900 */
    --card-bg: #1e293b;
    /* Slate 800 */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #38bdf8;
    /* Sky Blue */
    --accent-hover: #0ea5e9;
    --border-color: #334155;
    --kafka-green: #00C08B;
    --danger-color: #ef4444;
    --input-bg: #0f172a;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

a {
    color: var(--text-primary);
}

/* --- LAYOUT --- */
.container {
    width: 100%;
    max-width: 600px;
}

/* --- HEADER --- */
.logo {
    font-family: 'Courier New', Courier, monospace;
    text-align: center;
    margin-bottom: 40px;
    font-size: 1.5rem;
    letter-spacing: -1px;
    color: var(--text-secondary);
}

.logo span {
    color: var(--text-primary);
    font-weight: bold;
    border-bottom: 2px solid var(--kafka-green);
}

.logo a {
    text-decoration: none;
    color: inherit;
}

/* --- CARD --- */
.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    animation: fade-in 0.6s ease-out;
}

/* --- TYPOGRAPHY --- */
h1 {
    font-size: 1.75rem;
    line-height: 1.3;
    margin-bottom: 24px;
    font-weight: 700;
}

h2 {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 24px;
    font-family: 'Courier New', Courier, monospace;
}

h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

p {
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* --- BUTTONS & LINKS --- */
.options-grid {
    display: grid;
    gap: 16px;
    margin-top: 32px;
}

.option-btn,
.start-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 500;
    width: 100%;
}

.start-btn {
    justify-content: center;
    background-color: var(--kafka-green);
    color: #0f172a;
    font-weight: bold;
    border: none;
}

.start-btn:hover {
    background-color: #00e6a6;
    transform: translateY(-2px);
}

.option-btn:hover {
    border-color: var(--accent-color);
    background-color: rgba(56, 189, 248, 0.05);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.arrow {
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.option-btn:hover .arrow {
    opacity: 1;
    transform: translateX(5px);
}

/* --- RESULT ELEMENTS --- */
.verdict-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    background-color: rgba(56, 189, 248, 0.1);
    color: var(--accent-color);
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.recommendation-box {
    background-color: rgba(0, 0, 0, 0.2);
    border-left: 4px solid var(--kafka-green);
    padding: 16px;
    border-radius: 0 8px 8px 0;
    margin: 24px 0;
    font-style: italic;
    color: var(--text-secondary);
}

.divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 32px 0;
}

/* --- FORM --- */
input {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    margin-bottom: 16px;
    transition: border-color 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--accent-color);
}

button.submit-btn {
    width: 100%;
    background-color: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.1s, background-color 0.2s;
}

button.submit-btn:hover {
    background-color: #e2e8f0;
    transform: translateY(-1px);
}

/* --- FOOTER --- */
.footer {
    margin-top: 40px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    opacity: 0.6;
    line-height: 1.6;
}

.footer a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
}

.restart-link {
    display: inline-block;
    margin-top: 12px;
    color: var(--accent-color) !important;
    border-bottom: 1px dashed var(--accent-color) !important;
    cursor: pointer;
}

/* --- ANIMATION --- */
@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Tweak */
@media (max-width: 480px) {
    .card {
        padding: 24px;
    }

    h1 {
        font-size: 1.5rem;
    }
}