/* ========================================================================
   CoachDGR — Modern European Mobile-First Design System
   ======================================================================== */

/* ---------- Reset & Base ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --c-bg:        #fafafa;
    --c-surface:   #ffffff;
    --c-text:      #1a1a2e;
    --c-text-2:    #6b7280;
    --c-accent:    #38bdf8;
    --c-accent-2:  #0ea5e9;
    --c-dark:      #111827;
    --c-dark-2:    #1f2937;
    --c-border:    #e5e7eb;
    --c-success:   #10b981;
    --c-danger:    #ef4444;
    --radius-sm:   8px;
    --radius:      12px;
    --radius-lg:   20px;
    --radius-xl:   28px;
    --shadow-sm:   0 1px 3px rgba(0,0,0,.06);
    --shadow:      0 4px 20px rgba(0,0,0,.08);
    --shadow-lg:   0 12px 40px rgba(0,0,0,.12);
    --shadow-xl:   0 20px 60px rgba(0,0,0,.15);
    --max-w:       1120px;
    --nav-h:       64px;
    --transition:  .25s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
    width: 100%;
    position: relative;
}
body.nav-open { overflow: hidden; }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

/* Strict containment — prevent ANY element from causing horizontal scroll */
main, section, footer, header, article, aside, nav .container-dg {
    max-width: 100vw;
    overflow-x: hidden;
}

/* Rich content containment (Quill body, user-generated HTML) */
.card-dg-pad img,
.card-dg-pad iframe,
.card-dg-pad video,
.card-dg-pad table,
.card-dg-pad pre {
    max-width: 100%;
    overflow-x: auto;
    word-break: break-word;
}
.card-dg-pad pre { white-space: pre-wrap; }

.container-dg { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; width: 100%; }

/* ---------- Typography ---------- */
.t-hero   { font-size: clamp(2.2rem, 6vw, 4rem); font-weight: 900; line-height: 1.08; letter-spacing: -.03em; }
.t-h1     { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; line-height: 1.15; letter-spacing: -.02em; }
.t-h2     { font-size: clamp(1.3rem, 3vw, 2rem); font-weight: 700; line-height: 1.2; }
.t-h3     { font-size: clamp(1.1rem, 2.5vw, 1.4rem); font-weight: 600; line-height: 1.3; }
.t-body   { font-size: 1rem; color: var(--c-text-2); line-height: 1.7; }
.t-small  { font-size: .875rem; color: var(--c-text-2); }
.t-micro  { font-size: .75rem; color: var(--c-text-2); text-transform: uppercase; letter-spacing: .08em; font-weight: 600; }

/* ---------- Navigation ---------- */
.nav-dg {
    position: sticky; top: 0; z-index: 100;
    height: var(--nav-h);
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--c-border);
    display: flex; align-items: center;
}
.nav-dg .container-dg {
    display: flex; align-items: center; justify-content: space-between; width: 100%;
}
.nav-brand {
    font-weight: 800; font-size: 1.25rem; color: var(--c-text);
    display: flex; align-items: center; gap: 8px;
}
.nav-brand span { color: var(--c-accent); }
.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links a {
    padding: 8px 14px; border-radius: var(--radius-sm);
    font-size: .875rem; font-weight: 500; color: var(--c-text-2);
    transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--c-text); background: #f3f4f6; }
.nav-cta {
    padding: 8px 20px !important;
    background: var(--c-dark) !important; color: #fff !important;
    border-radius: var(--radius) !important; font-weight: 600 !important;
}
.nav-cta:hover { background: var(--c-dark-2) !important; }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; z-index: 102; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--c-text); margin: 5px 0; border-radius: 2px; transition: var(--transition); }
.nav-overlay { display: none; }

@media (max-width: 768px) {
    .nav-links {
        position: fixed; top: 0; right: 0; bottom: 0;
        width: 280px;
        flex-direction: column;
        background: #ffffff;
        padding: calc(var(--nav-h) + 16px) 24px 24px;
        gap: 4px;
        transform: translateX(100%); transition: transform .3s ease;
        z-index: 101;
        box-shadow: -4px 0 20px rgba(0,0,0,.15);
        overflow-y: auto;
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links a { padding: 14px 16px; font-size: 1.1rem; width: 100%; border-radius: var(--radius); }
    .nav-toggle { display: block; }
    .nav-overlay {
        display: block; position: fixed; inset: 0;
        background: rgba(0,0,0,.4);
        z-index: 100;
        opacity: 0; pointer-events: none;
        transition: opacity .3s ease;
    }
    .nav-overlay.open { opacity: 1; pointer-events: auto; }
}

/* ---------- Buttons ---------- */
.btn-dg {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 28px; border-radius: var(--radius); border: none;
    font-family: inherit; font-size: .95rem; font-weight: 600;
    cursor: pointer; transition: var(--transition);
    text-decoration: none;
}
.btn-primary-dg { background: var(--c-accent); color: #fff; }
.btn-primary-dg:hover { background: var(--c-accent-2); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-dark-dg { background: var(--c-dark); color: #fff; }
.btn-dark-dg:hover { background: var(--c-dark-2); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-outline-dg { background: transparent; color: var(--c-text); border: 1.5px solid var(--c-border); }
.btn-outline-dg:hover { border-color: var(--c-text); background: #f9fafb; }
.btn-ghost-dg { background: transparent; color: var(--c-text-2); padding: 10px 16px; }
.btn-ghost-dg:hover { color: var(--c-text); background: #f3f4f6; }
.btn-success-dg { background: #25d366; color: #fff; }
.btn-success-dg:hover { background: #1da851; transform: translateY(-1px); }
.btn-sm-dg { padding: 10px 20px; font-size: .85rem; }
.btn-lg-dg { padding: 18px 36px; font-size: 1.05rem; }

/* ---------- Cards ---------- */
.card-dg {
    background: var(--c-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--c-border);
    overflow: hidden;
    transition: var(--transition);
}
.card-dg:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card-dg-pad { padding: 24px; }
@media (max-width: 768px) { .card-dg-pad { padding: 20px; } }

/* ---------- Badges ---------- */
.badge-dg {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 12px; border-radius: 999px;
    font-size: .75rem; font-weight: 600;
}
.badge-accent { background: #e0f2fe; color: #0369a1; }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-dark { background: #1f2937; color: #fff; }
.badge-outline { background: transparent; border: 1px solid var(--c-border); color: var(--c-text-2); }

/* ---------- Hero Section ---------- */
.hero-dg {
    position: relative;
    min-height: 90vh;
    display: flex; align-items: center;
    background: var(--c-dark);
    overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 70% 20%, rgba(56,189,248,.15), transparent),
        radial-gradient(ellipse 60% 50% at 20% 80%, rgba(99,102,241,.1), transparent),
        var(--c-dark);
}
.hero-content {
    position: relative; z-index: 2;
    padding: 120px 0 80px;
}
.hero-label {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px; border-radius: 999px;
    background: rgba(255,255,255,.08); color: rgba(255,255,255,.7);
    font-size: .8rem; font-weight: 500;
    margin-bottom: 24px; backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.1);
}
.hero-title { color: #fff; }
.hero-title em { font-style: normal; color: var(--c-accent); }
.hero-sub { color: rgba(255,255,255,.6); max-width: 520px; font-size: 1.1rem; margin: 20px 0 36px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-visual {
    position: absolute; right: 0; top: 50%; transform: translateY(-50%);
    width: 40%; opacity: .12;
    font-size: 22rem; color: var(--c-accent);
    text-align: right; pointer-events: none;
    overflow: hidden;
}
@media (max-width: 768px) {
    .hero-dg { min-height: 80vh; }
    .hero-content { padding: 100px 0 60px; }
    .hero-visual { display: none; }
}

/* ---------- Section ---------- */
.section-dg { padding: 80px 0; }
.section-dg-sm { padding: 48px 0; }
@media (max-width: 768px) {
    .section-dg { padding: 56px 0; }
    .section-dg-sm { padding: 32px 0; }
}
.section-header { margin-bottom: 48px; }
.section-header .t-micro { margin-bottom: 12px; }

/* ---------- Grid ---------- */
.grid-dg { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 992px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 576px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ---------- Sidebar Layout (content + aside) ---------- */
.layout-sidebar {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 40px;
}
.layout-sidebar-lesson {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
}
.layout-main { min-width: 0; }
.layout-aside { min-width: 0; }
.lesson-item {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
@media (max-width: 768px) {
    .layout-sidebar, .layout-sidebar-lesson { grid-template-columns: 1fr; gap: 24px; }
    .layout-sidebar-lesson .layout-aside { order: 2; }
    .layout-sidebar-lesson .layout-main { order: 1; }
    .lesson-item { flex-wrap: wrap; }
}

/* ---------- Feature Cards ---------- */
.feature-icon {
    width: 56px; height: 56px; border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; margin-bottom: 16px;
}
.feature-icon-amber { background: #e0f2fe; color: #0284c7; }
.feature-icon-blue  { background: #dbeafe; color: #2563eb; }
.feature-icon-green { background: #d1fae5; color: #059669; }
.feature-icon-purple{ background: #ede9fe; color: #7c3aed; }

/* ---------- Testimonials ---------- */
.testimonial-card .quote {
    font-size: 1.05rem; color: var(--c-text); line-height: 1.7;
    position: relative; padding-left: 20px;
    border-left: 3px solid var(--c-accent);
}
.testimonial-author { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.testimonial-avatar {
    width: 44px; height: 44px; border-radius: 50%;
    object-fit: cover; background: var(--c-accent);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; color: var(--c-dark); font-size: .9rem;
}

/* ---------- Newsletter ---------- */
.newsletter-dg {
    background: var(--c-dark); color: #fff;
    border-radius: var(--radius-xl); padding: 48px;
}
.newsletter-input {
    display: flex; gap: 8px; flex-wrap: wrap;
}
.newsletter-input input {
    flex: 1; min-width: 200px; padding: 14px 18px;
    border-radius: var(--radius); border: 1px solid rgba(255,255,255,.15);
    background: rgba(255,255,255,.08); color: #fff;
    font-family: inherit; font-size: .95rem;
    transition: var(--transition);
}
.newsletter-input input::placeholder { color: rgba(255,255,255,.4); }
.newsletter-input input:focus { outline: none; border-color: var(--c-accent); background: rgba(255,255,255,.12); }
@media (max-width: 768px) { .newsletter-dg { padding: 32px 20px; } }

/* ---------- Contact ---------- */
.contact-dg {
    background: var(--c-surface); border-radius: var(--radius-xl);
    border: 1px solid var(--c-border); padding: 48px; text-align: center;
}
@media (max-width: 768px) { .contact-dg { padding: 32px 20px; } }

/* ---------- Footer ---------- */
.footer-dg {
    background: var(--c-dark); color: rgba(255,255,255,.5);
    padding: 48px 0 32px; font-size: .875rem;
}
.footer-brand { font-weight: 800; font-size: 1.15rem; color: #fff; margin-bottom: 8px; }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { color: rgba(255,255,255,.5); transition: var(--transition); }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); margin-top: 32px; padding-top: 24px; }

/* ---------- Resource Cards ---------- */
.resource-card { position: relative; }
.resource-card .resource-status {
    position: absolute; top: 16px; right: 16px;
    width: 10px; height: 10px; border-radius: 50%;
    background: var(--c-success);
}
.resource-card .resource-badge { margin-bottom: 12px; }
.resource-card h3 { margin-bottom: 8px; }
.resource-actions { display: flex; gap: 8px; margin-top: 16px; }

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center; padding: 80px 24px;
    background: linear-gradient(135deg, var(--c-dark) 0%, #1e293b 100%);
    border-radius: var(--radius-xl); color: #fff;
}
.empty-state-icon { font-size: 4rem; opacity: .3; margin-bottom: 24px; }
.empty-state h3 { margin-bottom: 12px; }
.empty-state p { color: rgba(255,255,255,.6); max-width: 480px; margin: 0 auto 32px; }

/* ---------- Plan Cards ---------- */
.plan-card { position: relative; text-align: center; }
.plan-card.plan-featured { border: 2px solid var(--c-accent); }
.plan-popular {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    padding: 4px 20px; border-radius: 999px;
    background: var(--c-accent); color: var(--c-dark);
    font-size: .75rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: .05em;
}
.plan-price { font-size: 2.5rem; font-weight: 800; margin: 16px 0 8px; }
.plan-features { list-style: none; text-align: left; margin: 24px 0; }
.plan-features li {
    padding: 10px 0; border-bottom: 1px solid var(--c-border);
    display: flex; align-items: center; gap: 10px;
    font-size: .9rem; color: var(--c-text-2);
}
.plan-features li i { width: 20px; text-align: center; }
.plan-features li .fa-check { color: var(--c-success); }
.plan-features li .fa-times { color: #d1d5db; }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.text-accent { color: var(--c-accent); }
.mt-auto { margin-top: auto; }
.mb-0 { margin-bottom: 0; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.w-full { width: 100%; }
.rounded-full { border-radius: 50%; }

/* Scroll indicator animation */
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(8px); } }
.scroll-hint { animation: float 2s ease-in-out infinite; }

/* Smooth reveal animation */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.fade-up { animation: fadeUp .6s ease both; }
.fade-up-d1 { animation-delay: .1s; }
.fade-up-d2 { animation-delay: .2s; }
.fade-up-d3 { animation-delay: .3s; }