/* ==========================================================================
   Healthy Life - Minimal Luxury Style Sheet (2026)
   ========================================================================== */

:root {
    --bg-color: #FBF9F6;
    --text-main: #2B3A34;
    --text-muted: #70827A;
    --accent: #4A6B5D;
    --accent-light: #E8ECE9;
    --accent-warm: #E29578;
    --card-bg: rgba(255, 255, 255, 0.7);
    --blur-effect: blur(12px);
    --shadow: 0 8px 32px rgba(74, 107, 93, 0.04);
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: 'Prompt', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navbar เรียบหรูลอยแบบโปร่งแสง */
.navbar {
    position: sticky;
    top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 8%;
    background: rgba(251, 249, 246, 0.8);
    backdrop-filter: var(--blur-effect);
    z-index: 1000;
    border-bottom: 1px solid rgba(74, 107, 93, 0.05);
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.logo span { color: var(--accent); }

.nav-links {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 400;
    position: relative;
    transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-main);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: var(--transition);
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 60px 4%;
    animation: fadeIn 0.8s ease forwards;
}

.page-header {
    text-align: center;
    margin-bottom: 60px;
}

.badge {
    background: var(--accent-light);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 1px;
    display: inline-block;
    margin-bottom: 15px;
}

h1 {
    font-size: 2.6rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    margin-bottom: 15px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    font-weight: 300;
}

/* 1. หน้าแรก (Index) */
.hero-section {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
    padding: 40px 0 80px;
}

.hero-content { display: flex; flex-direction: column; align-items: flex-start; }
.hero-content h1 { font-size: 3.2rem; line-height: 1.2; margin-bottom: 20px; }
.description { color: var(--text-muted); font-size: 1.1rem; font-weight: 300; margin: 25px 0 35px; border-left: 3px solid var(--accent); padding-left: 20px; }

.btn-main {
    background: var(--accent);
    color: white;
    text-decoration: none;
    padding: 14px 35px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    box-shadow: 0 10px 25px rgba(74, 107, 93, 0.15);
    transition: var(--transition);
}

.btn-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(74, 107, 93, 0.25);
}

.hero-image { position: relative; }
.profile-img {
    /* กำหนดขนาดให้เล็กและเป็นวงกลม */
    width: 150px;       /* ปรับขนาดตามต้องการ เช่น 120px - 150px */
    height: 150px;      /* ต้องเท่ากับ width เพื่อให้เป็นวงกลม perfect */
    object-fit: cover;  /* เพื่อไม่ให้รูปสัดส่วนเพี้ยน */
    border-radius: 50%; /* ทำให้เป็นวงกลม */
    box-shadow: 0 4px 15px rgba(0,0,0,0.1); /* เพิ่มเงาเล็กน้อยให้ดูมินิมอล */

}

.features-section { margin-top: 40px; }
.section-title { font-size: 1.8rem; text-align: center; margin-bottom: 40px; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 25px; }

.feature-card {
    background: var(--card-bg);
    backdrop-filter: var(--blur-effect);
    border: 1px solid rgba(255,255,255,0.5);
    padding: 35px 25px;
    border-radius: 24px;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
}

.card-icon { font-size: 1.8rem; margin-bottom: 20px; color: var(--accent); }
.feature-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 0.9rem; font-weight: 300; }

/* 2. หน้าบล็อก (Articles) & ระบบ Filter */
.filter-container { display: flex; justify-content: center; gap: 15px; margin-bottom: 40px; }
.filter-btn {
    padding: 8px 24px;
    border: 1px solid var(--accent-light);
    background: transparent;
    color: var(--text-muted);
    border-radius: 50px;
    cursor: pointer;
    font-family: 'Prompt', sans-serif;
    transition: var(--transition);
}
.filter-btn.active, .filter-btn:hover { background: var(--accent); color: white; border-color: var(--accent); }

.articles-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 35px; }
.article-card { background: white; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); display: block; }
.article-card:hover { transform: translateY(-8px); }
.article-img-wrapper { height: 200px; overflow: hidden; }
.article-img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.article-body { padding: 25px; }
.article-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; display: flex; gap: 15px; }
.article-body h3 { font-size: 1.25rem; font-weight: 500; margin-bottom: 12px; }
.article-body p { color: var(--text-muted); font-size: 0.9rem; font-weight: 300; margin-bottom: 20px; }

.read-more-btn { background: none; border: none; color: var(--accent); font-family: 'Prompt'; font-size: 0.9rem; font-weight: 500; cursor: pointer; border-bottom: 1px solid transparent; transition: var(--transition); padding-bottom: 2px;}
.read-more-btn:hover { border-color: var(--accent); }

/* กล่องเนื้อหาขยายของบทความ */
.full-content { max-height: 0; overflow: hidden; transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1); opacity: 0; font-size: 0.9rem; color: var(--text-main); line-height: 1.7; background: var(--bg-color); border-radius: 12px; }
.full-content.open { max-height: 1000px; opacity: 1; padding: 20px; margin-top: 15px; border-left: 3px solid var(--accent); }

/* 3. หน้าอาหาร (Recipes) */
.recipes-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(450px, 1fr)); gap: 40px; }
@media(max-width: 768px){ .recipes-grid { grid-template-columns: 1fr; } }
.recipe-card { background: white; border-radius: 28px; overflow: hidden; box-shadow: var(--shadow); display: grid; grid-template-columns: 1fr 1.2fr; transition: var(--transition); }
@media(max-width: 550px){ .recipe-card { grid-template-columns: 1fr; } }
.recipe-img-box { position: relative; height: 100%; min-height: 200px; }
.recipe-img-box img { width: 100%; height: 100%; object-fit: cover; }
.recipe-tag { position: absolute; top: 15px; left: 15px; background: rgba(255,255,255,0.9); backdrop-filter: var(--blur-effect); padding: 4px 12px; border-radius: 50px; font-size: 0.75rem; font-weight: 500; }
.recipe-info { padding: 30px; display: flex; flex-direction: column; justify-content: space-between; }
.recipe-info h3 { font-size: 1.25rem; margin-bottom: 8px; }
.recipe-time { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 15px; }
.nutrition-minimal { display: flex; gap: 15px; background: var(--bg-color); padding: 10px 15px; border-radius: 14px; margin-bottom: 20px; }
.nut-item { font-size: 0.8rem; color: var(--text-main); }
.nut-item span { color: var(--text-muted); display: block; font-size: 0.7rem; }

.btn-recipe { background: none; border: none; font-family: 'Prompt'; color: var(--accent); font-size: 0.9rem; font-weight: 500; border-bottom: 1px solid var(--accent); width: fit-content; padding-bottom: 2px; cursor: pointer; text-align: left;}
.recipe-details-box { display: none; background: #FFF; padding: 20px; border-top: 1px dashed var(--accent-light); grid-column: span 2; animation: fadeIn 0.4s ease; }
.recipe-details-box h4 { font-size: 1rem; color: var(--accent); margin-bottom: 8px; }
.recipe-details-box ul, .recipe-details-box ol { padding-left: 20px; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 15px; }

/* 4. หน้าตารางออกกำลังกาย (Workout) */
.workout-nav { display: flex; justify-content: center; gap: 10px; margin-bottom: 40px; background: var(--accent-light); padding: 6px; border-radius: 50px; max-width: 450px; margin-left: auto; margin-right: auto; }
.wk-tab { flex: 1; padding: 10px 20px; border: none; background: transparent; font-family: 'Prompt'; font-size: 0.9rem; color: var(--text-muted); cursor: pointer; border-radius: 50px; transition: var(--transition); }
.wk-tab.active { background: white; color: var(--text-main); font-weight: 500; box-shadow: 0 4px 15px rgba(0,0,0,0.02); }
.workout-timeline { max-width: 700px; margin: 0 auto; }
.workout-day-content { display: none; }
.workout-day-content.active { display: block; animation: fadeIn 0.5s ease; }
.workout-row { display: flex; gap: 30px; margin-bottom: 20px; background: white; padding: 25px 30px; border-radius: 20px; box-shadow: var(--shadow); align-items: center; transition: var(--transition); }
.wk-time-badge { background: var(--bg-color); color: var(--accent); font-weight: 600; padding: 10px 20px; border-radius: 14px; font-size: 0.9rem; min-width: 100px; text-align: center; }
.wk-detail h4 { font-size: 1.15rem; font-weight: 500; margin-bottom: 4px; }
.wk-detail p { color: var(--text-muted); font-size: 0.85rem; font-weight: 300; }

/* 5. หน้าติดต่อ & BMI */
.split-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 30px; }
@media(max-width: 850px){ .split-layout { grid-template-columns: 1fr; gap: 40px; } }
.form-card, .bmi-card { background: white; padding: 40px; border-radius: 28px; box-shadow: var(--shadow); }
.input-group { margin-bottom: 20px; }
.input-group label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 8px; }
.input-group input, .input-group textarea { width: 100%; padding: 12px 18px; border: 1px solid var(--accent-light); background: var(--bg-color); border-radius: 14px; font-family: 'Prompt'; font-size: 0.95rem; color: var(--text-main); transition: var(--transition); }
.input-group input:focus, .input-group textarea:focus { outline: none; border-color: var(--accent); background: white; }
.btn-submit, .btn-calc { width: 100%; padding: 14px; background: var(--accent); color: white; border: none; border-radius: 14px; font-family: 'Prompt'; font-size: 0.95rem; font-weight: 500; cursor: pointer; transition: var(--transition); }
.btn-submit:hover, .btn-calc:hover { background: #3b5449; }
.bmi-result-display { margin-top: 25px; padding: 20px; background: var(--bg-color); border-radius: 16px; text-align: center; display: none; }
.bmi-num { font-size: 2.2rem; font-weight: 700; color: var(--accent); }
.bmi-status { font-size: 0.9rem; color: var(--text-muted); margin-top: 5px; font-weight: 300; }

.form-success-msg { display: none; margin-top: 15px; padding: 15px; background: #e8ece9; color: var(--accent); text-align: center; border-radius: 12px; font-size: 0.9rem; animation: fadeIn 0.4s ease; }

.footer { text-align: center; padding: 40px 0; margin-top: 80px; border-top: 1px solid rgba(74, 107, 93, 0.05); font-size: 0.85rem; color: var(--text-muted); }