/* Mobile-first, minimal dark mode design */

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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #2a2a2a;
    --accent: #4a9eff;
    --accent-hover: #5aaeff;
    --success: #4ade80;
    --error: #f87171;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.subtext {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Form */
.form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group select {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.875rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0a0' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group select:hover {
    border-color: var(--accent);
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    background-color: var(--bg-primary);
}

.form-group select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    border: none;
    border-radius: 8px;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
}

.btn-primary {
    background-color: var(--accent);
    color: white;
    margin-top: 0.5rem;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-primary);
    border-color: var(--accent);
}

/* Result Section */
.result-section {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.excuse-display {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    min-height: 100px;
}

.excuse-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Paywall */
.paywall-section {
    margin-top: 2rem;
    text-align: center;
}

.paywall-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem 1.5rem;
}

.paywall-content h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.paywall-text {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.paywall-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Usage Counter */
.usage-counter {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Utility */
.hidden {
    display: none !important;
}

.form-container.hidden {
    display: none !important;
}

/* Loading state */
.btn-primary.loading {
    position: relative;
    color: transparent;
}

.btn-primary.loading::after {
    content: "Thinking…";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: white;
}

/* Success feedback */
.btn-secondary.copied {
    background-color: var(--success);
    border-color: var(--success);
    color: white;
}

/* Tablet and Desktop */
@media (min-width: 768px) {
    body {
        padding: 2rem;
    }

    .card {
        padding: 2.5rem 2rem;
    }

    .header h1 {
        font-size: 2rem;
    }

    .form-group select,
    .btn-primary,
    .btn-secondary {
        font-size: 1rem;
    }
}

/* Large screens */
@media (min-width: 1024px) {
    .container {
        max-width: 600px;
    }
}