/* ============================================
   3D Helping Hands — Stylesheet
   ============================================ */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent: #06b6d4;
    --gradient: linear-gradient(135deg, #2563eb, #06b6d4);
    --gradient-text: linear-gradient(135deg, #3b82f6, #06b6d4);
    --dark: #0f172a;
    --dark-lighter: #1e293b;
    --dark-card: #1a2332;
    --text: #334155;
    --text-light: #64748b;
    --text-on-dark: #e2e8f0;
    --text-muted-dark: #94a3b8;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --border: #e2e8f0;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4, h5, h6 { font-family: 'Space Grotesk', 'Inter', sans-serif; line-height: 1.2; font-weight: 700; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.hidden { display: none !important; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============================================
   Navigation
   ============================================ */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 16px 0; transition: var(--transition); background: transparent; }
.navbar.scrolled { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(20px); box-shadow: 0 1px 3px rgba(0,0,0,0.08); padding: 10px 0; }
.nav-container { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.25rem; color: #fff; transition: var(--transition); }
.navbar.scrolled .logo { color: var(--dark); }
.logo-icon { width: 36px; height: 36px; }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.85); transition: var(--transition); }
.navbar.scrolled .nav-links a { color: var(--text); }
.nav-links a:hover { color: #fff; }
.navbar.scrolled .nav-links a:hover { color: var(--primary); }
.btn-nav { background: var(--primary) !important; color: #fff !important; padding: 8px 20px; border-radius: 8px; }
.btn-nav:hover { background: var(--primary-dark) !important; }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: #fff; transition: var(--transition); }
.navbar.scrolled .mobile-toggle span { background: var(--dark); }

/* ============================================
   Buttons
   ============================================ */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-family: 'Inter', sans-serif; font-weight: 600; font-size: 0.95rem; padding: 12px 28px; border-radius: 10px; border: none; cursor: pointer; transition: var(--transition); text-align: center; }
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.4); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.7); }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: 12px; }
.btn-full { width: 100%; }

/* ============================================
   Hero Section
   ============================================ */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 120px 0 80px; }
.hero-bg { position: absolute; inset: 0; background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 40%, #1e293b 100%); z-index: -2; }
.hero-bg canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.4; }
.hero-bg::after { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 30% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 70%), radial-gradient(ellipse at 70% 30%, rgba(6, 182, 212, 0.1) 0%, transparent 60%); z-index: 1; }
.hero-content { text-align: center; position: relative; z-index: 2; }
.hero-badge { display: inline-block; padding: 8px 20px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15); border-radius: 50px; color: var(--accent); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.05em; margin-bottom: 28px; }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); color: #fff; margin-bottom: 24px; letter-spacing: -0.02em; }
.gradient-text { background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 1.15rem; color: var(--text-muted-dark); max-width: 640px; margin: 0 auto 40px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }
.hero-stats { display: flex; align-items: center; justify-content: center; gap: 40px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-number { font-family: 'Space Grotesk', sans-serif; font-size: 1.5rem; font-weight: 700; color: #fff; }
.stat-label { font-size: 0.85rem; color: var(--text-muted-dark); }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.15); }
.scroll-indicator { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--text-muted-dark); font-size: 0.8rem; animation: bounce 2s infinite; }
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ============================================
   Sections
   ============================================ */
.section { padding: 100px 0; }
.section-dark { background: var(--dark); color: var(--text-on-dark); }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 60px; }
.section-tag { display: inline-block; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--primary-light); margin-bottom: 12px; }
.section-dark .section-tag { color: var(--accent); }
.section-header h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 16px; color: var(--dark); }
.section-dark .section-header h2 { color: #fff; }
.section-desc { font-size: 1.1rem; color: var(--text-light); line-height: 1.7; }
.section-dark .section-desc { color: var(--text-muted-dark); }

/* ============================================
   Trust Bar
   ============================================ */
.trust-bar { padding: 40px 0; background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.trust-label { text-align: center; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-light); margin-bottom: 24px; }
.trust-logos { display: flex; align-items: center; justify-content: center; gap: 40px; flex-wrap: wrap; }
.trust-logo { text-align: center; color: var(--text-light); }
.trust-logo svg { height: 40px; width: auto; margin-bottom: 4px; }
.trust-logo span { font-size: 0.75rem; color: var(--text-light); }
.trust-divider { width: 1px; height: 40px; background: var(--border); }

/* ============================================
   About Grid
   ============================================ */
.about-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.about-card { padding: 36px 28px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: var(--transition); }
.about-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.about-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: var(--gradient); border-radius: 14px; margin-bottom: 20px; color: #fff; }
.about-icon svg { width: 28px; height: 28px; }
.about-card h3 { font-size: 1.15rem; margin-bottom: 10px; color: var(--dark); }
.about-card p { font-size: 0.95rem; color: var(--text-light); line-height: 1.6; }

/* ============================================
   Problem Section
   ============================================ */
.problem-grid { max-width: 800px; margin: 0 auto; }
.problem-text .section-tag { color: var(--accent); }
.problem-text h2 { font-size: clamp(2rem, 4vw, 2.8rem); color: #fff; margin-bottom: 24px; }
.problem-text p { color: var(--text-muted-dark); font-size: 1.05rem; line-height: 1.7; margin-bottom: 16px; }
.problem-comparison { display: flex; flex-direction: column; gap: 12px; margin-top: 36px; }
.comparison-item { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; border-radius: var(--radius); font-weight: 600; }
.comparison-bad { background: rgba(239, 68, 68, 0.12); border: 1px solid rgba(239, 68, 68, 0.25); }
.comparison-mid { background: rgba(245, 158, 11, 0.12); border: 1px solid rgba(245, 158, 11, 0.25); }
.comparison-good { background: rgba(16, 185, 129, 0.15); border: 1px solid rgba(16, 185, 129, 0.3); }
.comparison-label { color: var(--text-on-dark); }
.comparison-price { font-family: 'Space Grotesk', sans-serif; font-size: 1.2rem; }
.comparison-bad .comparison-price { color: #ef4444; }
.comparison-mid .comparison-price { color: #f59e0b; }
.comparison-good .comparison-price { color: #10b981; font-size: 1.5rem; }

/* ============================================
   Progress Tracker
   ============================================ */
.progress-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.progress-card { text-align: center; padding: 36px 24px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: var(--transition); }
.progress-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.progress-icon { width: 52px; height: 52px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; border-radius: 50%; }
.progress-icon svg { width: 24px; height: 24px; }
.progress-icon-complete { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.progress-icon-active { background: rgba(37, 99, 235, 0.1); color: var(--primary); animation: pulse 2s infinite; }
.progress-icon-waiting { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.progress-icon-volunteer { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.2); } 50% { box-shadow: 0 0 0 12px rgba(37, 99, 235, 0); } }
.progress-number { font-family: 'Space Grotesk', sans-serif; font-size: 2.5rem; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.progress-label { font-size: 0.95rem; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.progress-sublabel { font-size: 0.8rem; color: var(--text-light); }
.progress-sublabel a { color: var(--primary); font-weight: 600; }
.progress-sublabel a:hover { text-decoration: underline; }
.progress-note { text-align: center; margin-top: 32px; padding: 20px; background: rgba(37, 99, 235, 0.05); border: 1px solid rgba(37, 99, 235, 0.1); border-radius: var(--radius); }
.progress-note p { font-size: 0.95rem; color: var(--text-light); }

/* ============================================
   How It Works (dark variant)
   ============================================ */
.section-dark .steps::before { background: rgba(255,255,255,0.1); }
.section-dark .step-content h3 { color: #fff; }
.section-dark .step-content p { color: var(--text-muted-dark); }

.steps { max-width: 700px; margin: 0 auto; display: flex; flex-direction: column; gap: 0; position: relative; }
.steps::before { content: ''; position: absolute; left: 28px; top: 40px; bottom: 40px; width: 2px; background: var(--border); }
.step { display: flex; gap: 28px; align-items: flex-start; padding: 24px 0; position: relative; }
.step-number { width: 56px; height: 56px; min-width: 56px; display: flex; align-items: center; justify-content: center; background: var(--gradient); color: #fff; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.3rem; border-radius: 50%; position: relative; z-index: 1; }
.step-content h3 { font-size: 1.2rem; margin-bottom: 8px; color: var(--dark); }
.step-content p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }

/* ============================================
   3D Model Viewer
   ============================================ */
.viewer-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; align-items: center; }
.viewer-text .section-tag { display: block; margin-bottom: 12px; }
.viewer-text h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); color: var(--dark); margin-bottom: 16px; }
.viewer-text p { color: var(--text-light); font-size: 1.05rem; line-height: 1.7; margin-bottom: 24px; }
.viewer-controls { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.viewer-btn { width: 40px; height: 40px; border-radius: 50%; border: 2px solid var(--border); background: var(--bg); cursor: pointer; transition: var(--transition); position: relative; }
.viewer-btn:hover { transform: scale(1.1); }
.viewer-btn.active { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2); }
.viewer-btn[data-color="0x3b82f6"] { background: #3b82f6; }
.viewer-btn[data-color="0xef4444"] { background: #ef4444; }
.viewer-btn[data-color="0x10b981"] { background: #10b981; }
.viewer-btn[data-color="0xf59e0b"] { background: #f59e0b; }
.viewer-btn[data-color="0x8b5cf6"] { background: #8b5cf6; }
.viewer-hint { font-size: 0.85rem; color: var(--text-light); }
.viewer-canvas-wrapper { position: relative; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4/3; }
.viewer-canvas-wrapper canvas { width: 100% !important; height: 100% !important; display: block; }
.viewer-loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; background: var(--bg-alt); color: var(--text-light); font-size: 0.9rem; }
.spinner { width: 32px; height: 32px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================
   Models Section
   ============================================ */
.model-tabs { display: flex; justify-content: center; gap: 8px; margin-bottom: 40px; }
.tab-btn { padding: 10px 28px; border: 1px solid rgba(255,255,255,0.15); background: transparent; color: var(--text-muted-dark); font-family: 'Inter', sans-serif; font-size: 0.95rem; font-weight: 600; border-radius: 50px; cursor: pointer; transition: var(--transition); }
.tab-btn:hover { border-color: rgba(255,255,255,0.3); color: #fff; }
.tab-btn.active { background: var(--gradient); border-color: transparent; color: #fff; }
.models-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.model-card { background: var(--dark-card); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-lg); overflow: hidden; display: flex; transition: var(--transition); }
.model-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.15); box-shadow: 0 10px 40px rgba(0,0,0,0.3); }
.model-image { width: 200px; min-width: 200px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.03); border-right: 1px solid rgba(255,255,255,0.06); }
.model-placeholder { color: var(--primary-light); padding: 24px; }
.model-placeholder-kids { color: var(--accent); }
.model-placeholder-animal { color: #10b981; }
.model-placeholder-assistive { color: #f59e0b; }
.attribution-note { text-align: center; margin-top: 32px; font-size: 0.85rem; color: var(--text-muted-dark); }
.attribution-note a { color: var(--accent); text-decoration: underline; }
.model-placeholder svg { width: 80px; height: 80px; }
.model-info { padding: 28px; flex: 1; }
.model-info h3 { font-size: 1.15rem; color: #fff; margin-bottom: 8px; }
.model-tag { display: inline-block; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); background: rgba(6, 182, 212, 0.1); padding: 3px 10px; border-radius: 50px; margin-bottom: 12px; }
.model-info p { color: var(--text-muted-dark); font-size: 0.9rem; line-height: 1.6; margin-bottom: 16px; }
.model-specs { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.model-specs li { font-size: 0.8rem; color: var(--text-muted-dark); background: rgba(255,255,255,0.05); padding: 4px 12px; border-radius: 50px; border: 1px solid rgba(255,255,255,0.08); }

/* ============================================
   Request Form
   ============================================ */
.form-wrapper { max-width: 750px; margin: 0 auto; }
.request-form { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 48px; }
.form-section { margin-bottom: 36px; }
.form-section h3 { font-size: 1.1rem; color: var(--dark); margin-bottom: 20px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 8px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text); }
.form-group input, .form-group select, .form-group textarea { font-family: 'Inter', sans-serif; font-size: 0.95rem; padding: 12px 16px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--text); transition: var(--transition); outline: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }
.form-group textarea { resize: vertical; min-height: 120px; }
.file-upload { position: relative; border: 2px dashed var(--border); border-radius: var(--radius); padding: 32px; text-align: center; transition: var(--transition); cursor: pointer; }
.file-upload:hover { border-color: var(--primary); background: rgba(37, 99, 235, 0.03); }
.file-upload input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.file-upload-text { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--text-light); pointer-events: none; }
.file-upload-text svg { color: var(--primary); }
.file-upload-text small { font-size: 0.8rem; color: var(--text-light); }
.form-note { text-align: center; font-size: 0.85rem; color: var(--text-light); margin-top: 16px; }

/* Form success state */
.form-success { text-align: center; padding: 60px 40px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.success-icon { width: 64px; height: 64px; margin: 0 auto 20px; color: #10b981; }
.success-icon svg { width: 64px; height: 64px; }
.form-success h3 { font-size: 1.5rem; color: var(--dark); margin-bottom: 12px; }
.form-success p { color: var(--text-light); margin-bottom: 24px; }

/* ============================================
   Volunteer Section
   ============================================ */
.volunteer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 60px; }
.volunteer-card { text-align: center; padding: 36px 24px; background: var(--dark-card); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-lg); transition: var(--transition); }
.volunteer-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.15); }
.volunteer-icon { width: 56px; height: 56px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; color: var(--accent); }
.volunteer-icon svg { width: 40px; height: 40px; }
.volunteer-card h3 { font-size: 1.1rem; color: #fff; margin-bottom: 10px; }
.volunteer-card p { font-size: 0.9rem; color: var(--text-muted-dark); line-height: 1.6; }
.volunteer-form-wrapper { max-width: 600px; margin: 0 auto; }
.volunteer-form { background: var(--dark-card); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-lg); padding: 40px; }
.volunteer-form h3 { color: #fff; font-size: 1.3rem; text-align: center; margin-bottom: 24px; }
.volunteer-form .form-row { margin-bottom: 16px; }
.volunteer-form input, .volunteer-form select { font-family: 'Inter', sans-serif; font-size: 0.95rem; padding: 14px 18px; border: 1px solid rgba(255,255,255,0.12); border-radius: 10px; background: rgba(255,255,255,0.05); color: #fff; width: 100%; outline: none; transition: var(--transition); }
.volunteer-form input::placeholder, .volunteer-form select { color: var(--text-muted-dark); }
.volunteer-form input:focus, .volunteer-form select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15); }
.volunteer-form select option { background: var(--dark); color: #fff; }

/* ============================================
   Newsletter Section
   ============================================ */
.newsletter-section { padding: 60px 0; background: var(--bg-alt); }
.newsletter-card { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 48px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.newsletter-content h2 { font-size: 1.5rem; color: var(--dark); margin-bottom: 8px; }
.newsletter-content p { color: var(--text-light); font-size: 0.95rem; }
.newsletter-form { flex-shrink: 0; }
.newsletter-input-group { display: flex; gap: 8px; margin-bottom: 8px; }
.newsletter-input-group input { font-family: 'Inter', sans-serif; font-size: 0.95rem; padding: 14px 18px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--text); outline: none; width: 280px; transition: var(--transition); }
.newsletter-input-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }
.newsletter-form small { font-size: 0.8rem; color: var(--text-light); }

/* ============================================
   Donate Section
   ============================================ */
.donate-content { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.donate-text .section-tag { display: block; margin-bottom: 12px; }
.section-dark .donate-text .section-tag { color: var(--accent); }
.donate-text h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); color: #fff; margin-bottom: 16px; }
.donate-text > p { color: var(--text-muted-dark); font-size: 1.05rem; margin-bottom: 32px; }
.donate-breakdown { display: flex; flex-direction: column; gap: 16px; }
.section-dark .donate-item { background: var(--dark-card); border-color: rgba(255,255,255,0.08); }
.donate-item { display: flex; align-items: center; gap: 20px; padding: 16px 20px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); }
.donate-amount { font-family: 'Space Grotesk', sans-serif; font-size: 1.3rem; font-weight: 700; color: var(--primary-light); min-width: 60px; }
.donate-desc { font-size: 0.95rem; color: var(--text-muted-dark); }
.donate-card { background: var(--dark-card); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-lg); padding: 40px; }
.donate-card h3 { font-size: 1.3rem; color: #fff; margin-bottom: 8px; }
.donate-card > p { color: var(--text-muted-dark); font-size: 0.95rem; margin-bottom: 24px; }
.donate-amounts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 16px; }
.amount-btn { padding: 14px; border: 2px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.05); color: var(--text-on-dark); font-family: 'Space Grotesk', sans-serif; font-size: 1.1rem; font-weight: 700; border-radius: 10px; cursor: pointer; transition: var(--transition); }
.amount-btn:hover { border-color: var(--primary); color: #fff; }
.amount-btn.active { background: var(--gradient); color: #fff; border-color: transparent; }
.donate-card .form-group { margin-bottom: 16px; }
.donate-card input { font-family: 'Inter', sans-serif; font-size: 0.95rem; padding: 14px 18px; border: 1px solid rgba(255,255,255,0.12); border-radius: 10px; background: rgba(255,255,255,0.05); color: #fff; width: 100%; outline: none; transition: var(--transition); }
.donate-card input::placeholder { color: var(--text-muted-dark); }
.donate-card input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15); }
.donate-card .form-note { color: var(--text-muted-dark); }
.payment-methods { display: flex; align-items: center; gap: 12px; justify-content: center; margin-top: 16px; margin-bottom: 8px; }
.payment-methods span { font-size: 0.8rem; color: var(--text-muted-dark); }
.payment-icons { display: flex; gap: 8px; }
.payment-icons svg { height: 20px; color: var(--text-muted-dark); }

/* ============================================
   Stories Section
   ============================================ */
.stories-placeholder { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.story-card { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: var(--transition); }
.story-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.story-image-placeholder { height: 200px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(6, 182, 212, 0.05)); color: var(--primary-light); }
.story-image-placeholder svg { width: 64px; height: 64px; opacity: 0.5; }
.story-image-animal { background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(6, 182, 212, 0.05)); color: #10b981; }
.story-image-volunteer { background: linear-gradient(135deg, rgba(139, 92, 246, 0.05), rgba(37, 99, 235, 0.05)); color: #8b5cf6; }
.story-content { padding: 28px; }
.story-content h3 { font-size: 1.15rem; color: var(--dark); margin-bottom: 8px; }
.story-content p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; margin-bottom: 16px; }
.story-link { font-size: 0.9rem; font-weight: 600; color: var(--primary); transition: var(--transition); }
.story-link:hover { color: var(--primary-dark); }

/* ============================================
   Impact Section
   ============================================ */
.impact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.impact-card { text-align: center; padding: 40px 24px; background: var(--dark-card); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-lg); }
.impact-number { font-family: 'Space Grotesk', sans-serif; font-size: 2.2rem; font-weight: 700; background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; }
.impact-card p { font-size: 0.9rem; color: var(--text-muted-dark); line-height: 1.5; }

/* ============================================
   FAQ Section
   ============================================ */
.faq-list { max-width: 750px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 20px 0; background: none; border: none; font-family: 'Inter', sans-serif; font-size: 1.05rem; font-weight: 600; color: var(--dark); cursor: pointer; text-align: left; transition: var(--transition); }
.faq-question:hover { color: var(--primary); }
.faq-question svg { transition: transform 0.3s ease; min-width: 20px; }
.faq-item.active .faq-question svg { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer p { padding: 0 0 20px; color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }

/* ============================================
   Social Links
   ============================================ */
.social-links { display: flex; gap: 12px; margin-top: 16px; }
.social-link { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 10px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); color: var(--text-muted-dark); transition: var(--transition); }
.social-link:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }
.social-link svg { width: 20px; height: 20px; }

/* ============================================
   Footer
   ============================================ */
.footer { background: var(--dark); color: var(--text-muted-dark); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.6; margin-bottom: 12px; }
.footer-email { color: var(--primary-light) !important; }
.footer-links h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.9rem; color: var(--text-muted-dark); transition: var(--transition); }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; text-align: center; font-size: 0.85rem; }
.footer-bottom a { color: var(--primary-light); }
.footer-bottom p + p { margin-top: 4px; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .about-grid { grid-template-columns: repeat(2, 1fr); }
    .volunteer-grid { grid-template-columns: repeat(2, 1fr); }
    .impact-grid { grid-template-columns: repeat(2, 1fr); }
    .progress-grid { grid-template-columns: repeat(2, 1fr); }
    .donate-content { grid-template-columns: 1fr; gap: 40px; }
    .viewer-layout { grid-template-columns: 1fr; gap: 40px; }
    .stories-placeholder { grid-template-columns: 1fr; }
    .newsletter-card { flex-direction: column; text-align: center; }
    .newsletter-input-group input { width: 100%; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .section { padding: 70px 0; }
    .mobile-toggle { display: flex; }
    .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--dark); padding: 20px 24px; gap: 16px; border-bottom: 1px solid rgba(255,255,255,0.1); }
    .nav-links.active { display: flex; }
    .navbar.scrolled .nav-links { background: #fff; border-bottom: 1px solid var(--border); }
    .hero { min-height: auto; padding: 140px 0 80px; }
    .hero h1 { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-stats { gap: 20px; }
    .stat-divider { display: none; }
    .trust-logos { gap: 20px; }
    .trust-divider { display: none; }
    .about-grid { grid-template-columns: 1fr; }
    .progress-grid { grid-template-columns: 1fr 1fr; }
    .models-grid { grid-template-columns: 1fr; }
    .model-card { flex-direction: column; }
    .model-image { width: 100%; min-width: unset; height: 160px; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
    .form-row { grid-template-columns: 1fr; }
    .request-form { padding: 28px; }
    .volunteer-grid { grid-template-columns: 1fr; }
    .volunteer-form { padding: 28px; }
    .impact-grid { grid-template-columns: 1fr 1fr; }
    .donate-amounts { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .steps::before { left: 20px; }
    .step { gap: 20px; }
    .step-number { width: 40px; height: 40px; min-width: 40px; font-size: 1rem; }
}

@media (max-width: 480px) {
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .model-tabs { flex-wrap: wrap; }
    .tab-btn { padding: 8px 20px; font-size: 0.85rem; }
    .progress-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Blog Page
   ============================================ */
.blog-header { padding: 160px 0 60px; background: linear-gradient(180deg, var(--bg-alt), var(--bg)); text-align: center; }
.blog-header h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); color: var(--dark); margin-bottom: 16px; }
.blog-header p { max-width: 640px; margin: 0 auto; font-size: 1.1rem; color: var(--text-light); }

.blog-section { padding-top: 40px; }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 60px; }
.blog-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; transition: var(--transition); }
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(37, 99, 235, 0.2); }
.blog-card-featured { grid-column: span 3; display: grid; grid-template-columns: 1.1fr 1fr; align-items: stretch; }
.blog-card-featured .blog-image { min-height: 280px; }
.blog-image { position: relative; height: 180px; display: flex; align-items: flex-end; padding: 16px; background: linear-gradient(135deg, #2563eb, #06b6d4); }
.blog-image-1 { background: linear-gradient(135deg, #2563eb, #06b6d4); }
.blog-image-2 { background: linear-gradient(135deg, #0ea5e9, #8b5cf6); }
.blog-image-3 { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.blog-image-4 { background: linear-gradient(135deg, #10b981, #06b6d4); }
.blog-image-5 { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.blog-image-6 { background: linear-gradient(135deg, #1e293b, #475569); }
.blog-category { display: inline-block; padding: 4px 12px; background: rgba(255,255,255,0.2); backdrop-filter: blur(8px); color: #fff; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; border-radius: 50px; border: 1px solid rgba(255,255,255,0.3); }
.blog-content { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.blog-meta { display: flex; gap: 8px; font-size: 0.8rem; color: var(--text-light); margin-bottom: 12px; }
.blog-content h2 { font-size: 1.5rem; color: var(--dark); margin-bottom: 12px; }
.blog-content h3 { font-size: 1.15rem; color: var(--dark); margin-bottom: 10px; }
.blog-content p { font-size: 0.95rem; color: var(--text-light); line-height: 1.6; margin-bottom: 16px; flex: 1; }
.story-link.disabled { color: var(--text-light); pointer-events: none; opacity: 0.7; }

.blog-cta { text-align: center; padding: 60px 40px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.blog-cta h3 { font-size: 1.6rem; color: var(--dark); margin-bottom: 8px; }
.blog-cta p { color: var(--text-light); margin-bottom: 24px; }
.blog-cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn-outline-dark { background: transparent; color: var(--dark); border: 2px solid var(--border); }
.btn-outline-dark:hover { border-color: var(--primary); color: var(--primary); }

@media (max-width: 900px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .blog-card-featured { grid-column: span 2; grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .blog-grid { grid-template-columns: 1fr; }
    .blog-card-featured { grid-column: span 1; }
}