/* CSS Variables untuk Tema yang Konsisten */
:root {
    --primary-color: #ff6b6b;
    --primary-hover: #ff5252;
    --secondary-color: #4ecdc4;
    --secondary-hover: #45b7af;
    --bg-color: #f7f9fc;
    --card-bg: #ffffff;
    --text-main: #2d3436;
    --text-muted: #636e72;
    --border-color: #dfe6e9;
    --success-bg: #d4edda;
    --success-text: #155724;
    --error-bg: #f8d7da;
    --error-text: #721c24;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Typography & Layout */
.main-header {
    background: linear-gradient(135deg, var(--primary-color), #ff8787);
    color: white;
    padding: 3rem 1rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.header-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.header-content p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.container {
    max-width: 800px;
    margin: -2rem auto 2rem;
    padding: 0 1rem;
    flex: 1;
    width: 100%;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    color: var(--text-main);
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

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

.form-group label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

input[type="time"],
input[type="text"],
input[type="number"],
textarea {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
    width: 100%;
}

input[type="time"]:focus,
input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.2);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn.primary {
    background-color: var(--primary-color);
    color: white;
}

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

.btn.secondary {
    background-color: var(--secondary-color);
    color: white;
}

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn.outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn.outline:hover:not(:disabled) {
    background-color: #f1f3f5;
    transform: translateY(-1px);
}

.full-width {
    width: 100%;
}

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

.mt-10 { margin-top: 0.625rem; }
.mt-15 { margin-top: 1rem; }

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
}

.alert.success {
    background-color: var(--success-bg);
    color: var(--success-text);
    border: 1px solid #c3e6cb;
}

.alert.error {
    background-color: var(--error-bg);
    color: var(--error-text);
    border: 1px solid #f5c6cb;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Results */
.result-box {
    background-color: #fafbfc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.result-box h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

#result-content {
    white-space: pre-line; /* Agar linebreak dari Gemini API terbaca */
    line-height: 1.7;
}

/* Notif Section */
#notification-prompt {
    text-align: center;
    background: #fff3cd;
    border: 1px solid #ffeeba;
    color: #856404;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Adjustments */
@media (max-width: 600px) {
    .container {
        margin-top: -1rem;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
}