@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    /* Blue-600 to Blue-800 */
    --hover-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    /* Blue-500 to Blue-600 */
    --surface-color: #ffffff;
    --background-color: #f9fafb;
    /* Gray-50 */
    --text-main: #111827;
    /* Gray-900 */
    --text-muted: #6b7280;
    /* Gray-500 */
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--background-color);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
    /* Base line height */
}

p,
li {
    line-height: 1.8;
    /* Increased text line height */
}

/* Specific override for article content to be even more readable */
/* Targeting .prose class to ensure we override Tailwind defaults */
article.prose p,
article.prose li,
.prose p,
.prose li {
    line-height: 2 !important;
}

/* Premium Buttons */
.btn-primary {
    background: var(--primary-gradient);
    color: white;
    padding: 0.875rem 2.5rem;
    /* Larger touch target */
    border-radius: 9999px;
    /* Pill shape for modern feel */
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    /* Soft colored shadow */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    letter-spacing: 0.01em;
}

.btn-primary:hover {
    background: var(--hover-gradient);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Premium Card */
.card-container {
    background: var(--surface-color);
    border-radius: 1.5rem;
    /* 24px */
    box-shadow:
        0 10px 40px -10px rgba(0, 0, 0, 0.08),
        0 0 20px -5px rgba(0, 0, 0, 0.04);
    /* Deep, soft shadow */
    padding: 3.5rem;
    margin-bottom: 3rem;
    width: 100%;
    max-width: 52rem;
    /* Slightly wider */
    margin-left: auto;
    margin-right: auto;
    border: 1px solid rgba(255, 255, 255, 0.8);
    /* Subtle border for definition */
}

/* Utility / Helpers */
.ad-slot {
    /* Reserved space, invisible by default */
    min-height: 1px;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

/* Typography Enhancements */
h1,
h2,
h3,
h4,
h5,
h6 {
    letter-spacing: -0.02em;
    /* Tighten headlines */
}

/* Input Fields Upgrade (targeting Tailwind classes mostly, but adding global helpers) */
input[type="number"],
input[type="text"] {
    transition: all 0.2s ease-in-out;
}