/* Ephralim Design System - Phase 1 */
:root {
    --color-primary: #10b981;
    --color-primary-dark: #059669;
    --color-primary-light: #d1fae5;
    --color-bg: #f8fafc;
    --color-text: #1f2937;
    --color-text-muted: #6b7280;
    --color-card-bg: rgba(255, 255, 255, 0.95);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-glass: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

body {
    font-family: 'PingFang TC', 'Microsoft JhengHei', 'Inter', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container { width: 100%; margin-left: auto; margin-right: auto; padding-left: 1rem; padding-right: 1rem; box-sizing: border-box;}
.container-md { max-width: 42rem; }
.container-lg { max-width: 48rem; }
.container-xl { max-width: 56rem; }
.section-py { padding-top: 3rem; padding-bottom: 3rem; }
.text-center { text-align: center; }
.mb-8 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: 1fr; }
@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.title-h1 { font-size: 1.875rem; line-height: 2.25rem; font-weight: 700; }
@media (min-width: 768px) { .title-h1 { font-size: 2.25rem; line-height: 2.5rem; } }
.title-h2 { font-size: 1.5rem; line-height: 2rem; font-weight: 700; }
.title-h3 { font-size: 1.25rem; line-height: 1.75rem; font-weight: 700; }
.title-h4 { font-size: 1.125rem; line-height: 1.75rem; font-weight: 700; }

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.text-primary { color: var(--color-primary); }
.text-primary-dark { color: var(--color-primary-dark); }
.text-muted { color: var(--color-text-muted); }
.text-white { color: white; }

.hero {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('../assets/images/expert_stage.jpg') center/cover;
    color: white;
    padding: 4rem 1rem;
    text-align: center;
}

.glass-card {
    background-color: var(--color-card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glass);
    border: 1px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    background-color: var(--color-primary-dark);
    color: white;
    font-weight: 700;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    text-decoration: none;
    box-sizing: border-box;
}
.btn-primary:hover {
    background-color: #047857;
}
.btn-primary:active {
    transform: scale(0.98);
}

.icon-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(16, 185, 129, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    border: 1px solid rgba(16, 185, 129, 0.3);
    font-size: 0.875rem;
    font-weight: 500;
}

.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-start { display: flex; align-items: flex-start; gap: 1rem; }
.flex-col { display: flex; flex-direction: column; }
.items-center { display: flex; align-items: center; gap: 1rem; }
.rounded-full { border-radius: 9999px; }
.w-10 { width: 2.5rem; height: 2.5rem; }
.w-16 { width: 4rem; height: 4rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.overflow-hidden { overflow: hidden; }
.relative { position: relative; }
.absolute { position: absolute; }
.z-10 { z-index: 10; }
.flex-grow { flex-grow: 1; }
.list-none { list-style-type: none; }
.cursor-pointer { cursor: pointer; }

details.faq-item {
    background-color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid #e5e7eb;
    padding: 1rem;
    transition: background-color 0.3s;
}
details.faq-item[open] { background-color: var(--color-primary-light); }
details.faq-item summary { display: flex; justify-content: space-between; align-items: center; font-weight: 700; cursor: pointer; list-style: none; }
details.faq-item summary::-webkit-details-marker { display: none; }