/* ========================================
   WebStruct — Modern Minimalist Design
   ======================================== */

:root {
    --color-dark: #1a1a2e;
    --color-dark-light: #16213e;
    --color-accent: #4361ee;
    --color-accent-hover: #3a56d4;
    --color-success: #06d6a0;
    --color-error: #ef476f;
    --color-warning: #ffd166;
    --color-bg: #f8f9fa;
    --color-white: #ffffff;
    --color-text: #333333;
    --color-text-light: #6c757d;
    --color-border: #e0e0e0;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --max-width: 1200px;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-accent-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ---- Container ---- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Navbar ---- */
.navbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}

.navbar__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 32px;
}

/* Logo */
.navbar__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.navbar__logo-icon {
    width: 38px;
    height: 38px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.navbar__logo-text {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-dark);
    letter-spacing: -0.5px;
}

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

/* Nav links */
.navbar__nav {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.navbar__link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 8px 14px;
    border-radius: var(--radius);
    transition: all var(--transition);
    white-space: nowrap;
}

.navbar__link svg {
    opacity: 0.5;
    transition: opacity var(--transition);
}

.navbar__link:hover {
    color: var(--color-accent);
    background: rgba(67, 97, 238, 0.06);
}

.navbar__link:hover svg {
    opacity: 1;
}

/* Auth actions */
.navbar__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.navbar__user {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text);
    padding-right: 8px;
}

.navbar__user svg {
    color: var(--color-accent);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn--ghost:hover {
    background: var(--color-bg);
    border-color: var(--color-text-light);
    color: var(--color-dark);
}

/* Mobile toggle */
.navbar__toggle {
    display: none;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    padding: 8px;
    width: 40px;
    height: 40px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all var(--transition);
}

.navbar__toggle:hover {
    border-color: var(--color-text-light);
}

.navbar__toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--color-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.navbar__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.navbar__toggle.active span:nth-child(2) {
    opacity: 0;
}

.navbar__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Mobile menu */
.navbar__mobile {
    display: none;
    border-top: 1px solid var(--color-border);
    padding: 16px 24px 20px;
    background: var(--color-white);
}

.navbar__mobile.active {
    display: block;
}

.navbar__mobile-nav {
    list-style: none;
    margin-bottom: 16px;
}

.navbar__mobile-nav li {
    border-bottom: 1px solid var(--color-border);
}

.navbar__mobile-nav li:last-child {
    border-bottom: none;
}

.navbar__mobile-nav a {
    display: block;
    padding: 14px 0;
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition);
}

.navbar__mobile-nav a:hover {
    color: var(--color-accent);
}

.navbar__mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 8px;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--radius);
    font-family: var(--font-main);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-white);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn--secondary {
    background: var(--color-white);
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn--secondary:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

.btn--success {
    background: var(--color-success);
    color: var(--color-white);
}

.btn--success:hover {
    filter: brightness(0.9);
}

.btn--danger {
    background: var(--color-error);
    color: var(--color-white);
}

.btn--danger:hover {
    filter: brightness(0.9);
}

.btn--sm {
    padding: 6px 16px;
    font-size: 0.85rem;
}

.btn--lg {
    padding: 14px 32px;
    font-size: 1.05rem;
}

.btn--block {
    width: 100%;
}

/* ---- Hero ---- */
.hero {
    background: linear-gradient(135deg, var(--color-dark) 0%, #0f1628 100%);
    color: var(--color-white);
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero__decoration {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(67, 97, 238, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__content {
    text-align: left;
}

.hero__badge {
    display: inline-block;
    background: rgba(67, 97, 238, 0.15);
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.82rem;
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 24px;
    letter-spacing: 0.3px;
    border: 1px solid rgba(67, 97, 238, 0.25);
}

.hero__title {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 20px;
    line-height: 1.15;
}

.hero__title span {
    background: linear-gradient(135deg, var(--color-accent), #7c8cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.65);
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.75;
}

.hero__actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}

.btn--hero-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn--hero-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
    color: var(--color-white);
}

.hero__trust {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.hero__trust-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    color: rgba(255,255,255,0.55);
}

.hero__trust-item svg {
    color: var(--color-success);
    flex-shrink: 0;
}

/* Hero code window */
.hero__visual {
    display: flex;
    justify-content: center;
}

.hero__code-window {
    background: #0d1117;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.08);
    overflow: hidden;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.hero__code-dots {
    display: flex;
    gap: 6px;
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.hero__code-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.12);
}

.hero__code-dots span:first-child { background: #ff5f57; }
.hero__code-dots span:nth-child(2) { background: #ffbd2e; }
.hero__code-dots span:nth-child(3) { background: #28ca41; }

.hero__code {
    padding: 20px;
    margin: 0;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.88rem;
    line-height: 1.7;
    color: #e6edf3;
    overflow-x: auto;
}

.hl-tag { color: #7ee787; }
.hl-attr { color: #79c0ff; }
.hl-val { color: #a5d6ff; }

/* ---- Stats Bar ---- */
.stats-bar {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 0;
}

.stats-bar__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.stats-bar__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 28px 16px;
    border-right: 1px solid var(--color-border);
}

.stats-bar__item:last-child {
    border-right: none;
}

.stats-bar__number {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-dark);
    letter-spacing: -0.5px;
}

.stats-bar__label {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 2px;
}

/* ---- Section ---- */
.section {
    padding: 90px 0;
}

.section--alt {
    background: var(--color-white);
}

.section__header {
    text-align: center;
    margin-bottom: 56px;
}

.section__label {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}

.section__title {
    font-size: 2.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 14px;
    line-height: 1.3;
    letter-spacing: -0.3px;
}

.section__subtitle {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ---- Cards Grid ---- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

/* ---- Course Card ---- */
.course-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.course-card__img {
    width: 100%;
    max-height: 220px;
    object-fit: contain;
    background: #f4f6fb;
    padding: 10px;
}

.course-card__body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-card__title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.course-card__desc {
    font-size: 0.92rem;
    color: var(--color-text-light);
    margin-bottom: 16px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.course-card__price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
}

/* ---- Features Grid ---- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.features-grid--2x3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature {
    text-align: center;
    padding: 32px 24px;
}

.feature__icon {
    width: 60px;
    height: 60px;
    background: rgba(67, 97, 238, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.5rem;
}

.feature__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-dark);
}

.feature__desc {
    font-size: 0.92rem;
    color: var(--color-text-light);
}

/* Feature Cards (landing page) */
.feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--transition);
}

.feature-card:hover {
    border-color: rgba(67, 97, 238, 0.3);
    box-shadow: 0 4px 20px rgba(67, 97, 238, 0.08);
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    background: rgba(67, 97, 238, 0.1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    color: var(--color-accent);
}

.feature-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.feature-card__desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.65;
}

/* ---- Steps ---- */
.steps {
    max-width: 640px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.step__number {
    width: 52px;
    height: 52px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    flex-shrink: 0;
}

.step__content {
    padding-top: 4px;
}

.step__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 6px;
}

.step__desc {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.65;
}

.step__connector {
    width: 2px;
    height: 32px;
    background: var(--color-border);
    margin-left: 25px;
}

/* ---- Split Section ---- */
.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.split-section__desc {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.75;
    margin-bottom: 28px;
}

.check-list {
    list-style: none;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 0.95rem;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

.check-list li:last-child {
    border-bottom: none;
}

.check-list svg {
    flex-shrink: 0;
}

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.tech-item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text);
    transition: all var(--transition);
}

.tech-item:hover {
    border-color: rgba(67, 97, 238, 0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.tech-item__icon {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-accent);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* ---- FAQ ---- */
.faq {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.faq__item {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color var(--transition);
}

.faq__item[open] {
    border-color: rgba(67, 97, 238, 0.3);
}

.faq__question {
    padding: 18px 24px;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-dark);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.faq__question::-webkit-details-marker {
    display: none;
}

.faq__question::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--color-text-light);
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq__item[open] .faq__question::after {
    transform: rotate(45deg);
}

.faq__answer {
    padding: 0 24px 18px;
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ---- CTA Section ---- */
.cta-section {
    padding: 90px 0;
}

.cta-card {
    background: linear-gradient(135deg, var(--color-dark) 0%, #0f1628 100%);
    border-radius: 16px;
    padding: 64px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(67, 97, 238, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-card__title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 14px;
    position: relative;
}

.cta-card__desc {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.6);
    max-width: 520px;
    margin: 0 auto 32px;
    line-height: 1.7;
    position: relative;
}

.cta-card__actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

/* ---- Auth Page (split layout) ---- */
.auth-page {
    display: grid;
    grid-template-columns: 440px 1fr;
    min-height: calc(100vh - 68px);
}

.auth-panel {
    background: linear-gradient(160deg, var(--color-dark) 0%, #0f1628 100%);
    color: var(--color-white);
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.auth-panel::before {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(67, 97, 238, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.auth-panel__content {
    position: relative;
    z-index: 1;
}

.auth-panel__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 40px;
    text-decoration: none;
}

.auth-panel__logo svg {
    color: var(--color-accent);
}

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

.auth-panel__title {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 14px;
}

.auth-panel__desc {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
    margin-bottom: 36px;
}

.auth-panel__benefits {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-panel__benefits li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
}

.auth-panel__check {
    width: 28px;
    height: 28px;
    background: rgba(6, 214, 160, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-success);
}

/* Auth form side */
.auth-form-side {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 40px;
    background: var(--color-bg);
}

.auth-form-wrapper {
    width: 100%;
    max-width: 420px;
}

.auth-form__title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-dark);
    margin-bottom: 6px;
}

.auth-form__subtitle {
    color: var(--color-text-light);
    margin-bottom: 32px;
    font-size: 0.95rem;
}

.auth-form__divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 24px 0;
    color: var(--color-text-light);
    font-size: 0.85rem;
}

.auth-form__divider::before,
.auth-form__divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.auth-form__switch {
    text-align: center;
    font-size: 0.92rem;
    color: var(--color-text-light);
}

.auth-form__switch a {
    font-weight: 600;
}

/* Input with icon */
.input-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon > svg {
    position: absolute;
    left: 14px;
    color: var(--color-text-light);
    pointer-events: none;
    transition: color var(--transition);
    z-index: 1;
}

.input-icon:focus-within > svg {
    color: var(--color-accent);
}

.input-icon .form-control.form-control--icon {
    padding-left: 46px;
    padding-right: 42px;
}

.input-icon__toggle {
    position: absolute;
    right: 8px;
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    color: var(--color-text-light);
    border-radius: var(--radius);
    transition: color var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.input-icon__toggle:hover {
    color: var(--color-accent);
}

/* Legacy auth classes (kept for compatibility) */
.auth-container {
    max-width: 460px;
    margin: 60px auto;
    padding: 0 24px;
}

.auth-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border);
}

.auth-card__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
    text-align: center;
}

.auth-card__subtitle {
    color: var(--color-text-light);
    text-align: center;
    margin-bottom: 32px;
    font-size: 0.95rem;
}

/* ---- Forms ---- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-dark);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-main);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-white);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-text {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

/* ---- Alerts ---- */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 0.92rem;
    font-weight: 500;
}

.alert--success {
    background: rgba(6, 214, 160, 0.12);
    color: #05a77e;
    border: 1px solid rgba(6, 214, 160, 0.3);
}

.alert--error {
    background: rgba(239, 71, 111, 0.12);
    color: #d63d62;
    border: 1px solid rgba(239, 71, 111, 0.3);
}

.alert--warning {
    background: rgba(255, 209, 102, 0.15);
    color: #a88a2a;
    border: 1px solid rgba(255, 209, 102, 0.3);
}

/* ---- Course Detail Hero ---- */
.cd-hero {
    position: relative;
    padding: 60px 0 70px;
    overflow: hidden;
}

.cd-hero__bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    z-index: 0;
}

.cd-hero__bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 20%, rgba(67, 97, 238, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 30% 80%, rgba(114, 9, 183, 0.1) 0%, transparent 60%);
}

.cd-hero__inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 50px;
    align-items: center;
}

.cd-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(67, 97, 238, 0.2);
    color: #93b4fd;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 100px;
    margin-bottom: 20px;
    border: 1px solid rgba(67, 97, 238, 0.25);
}

.cd-hero__title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 16px;
}

.cd-hero__desc {
    color: #94a3b8;
    font-size: 1.08rem;
    line-height: 1.7;
    margin-bottom: 28px;
    max-width: 520px;
}

.cd-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.cd-hero__meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #cbd5e1;
    font-size: 0.9rem;
    font-weight: 500;
}

.cd-hero__meta-item svg {
    color: var(--color-accent);
}

/* Card */
.cd-hero__card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.cd-hero__card-img {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.cd-hero__card-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #f4f6fb;
    padding: 10px;
}

.cd-hero__card-body {
    padding: 28px;
}

.cd-hero__price {
    text-align: center;
    margin-bottom: 20px;
}

.cd-hero__price-amount {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-dark);
}

.cd-hero__price-note {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 2px;
}

.cd-hero__access {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 14px;
    color: var(--color-success);
    font-weight: 600;
    font-size: 0.92rem;
}

.cd-hero__guarantee {
    text-align: center;
    margin-top: 14px;
    font-size: 0.85rem;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.cd-hero__guarantee a {
    color: var(--color-accent);
    font-weight: 600;
}

/* Lessons Grid */
.cd-lessons {
    max-width: 750px;
    margin: 0 auto;
}

.cd-lesson-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    background: var(--color-white);
    border-radius: var(--radius);
    margin-bottom: 10px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.cd-lesson-item:hover {
    border-color: var(--color-accent);
    box-shadow: 0 2px 12px rgba(67, 97, 238, 0.08);
    transform: translateX(4px);
}

.cd-lesson-item__num {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-accent);
    opacity: 0.5;
    min-width: 36px;
    font-variant-numeric: tabular-nums;
}

.cd-lesson-item__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
}

.cd-lesson-item__status {
    margin-left: auto;
    color: var(--color-text-light);
    flex-shrink: 0;
}

.cd-lesson-item__status--unlocked {
    color: var(--color-success);
}

/* CTA */
.cd-cta {
    text-align: center;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    color: #fff;
}

.cd-cta__title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.cd-cta__desc {
    color: #94a3b8;
    font-size: 1.05rem;
    margin-bottom: 20px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cd-cta__price {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    color: #fff;
}

/* ---- Lessons List ---- */
.lessons-list {
    list-style: none;
}

.lessons-list__item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.lessons-list__item:last-child {
    border-bottom: none;
}

.lessons-list__number {
    width: 28px;
    height: 28px;
    background: rgba(67, 97, 238, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--color-accent);
    flex-shrink: 0;
}

.lessons-list__title {
    flex: 1;
    color: var(--color-text);
}

.lessons-list__item--locked .lessons-list__title {
    color: var(--color-text-light);
}

.lessons-list__lock {
    color: var(--color-text-light);
    font-size: 0.85rem;
}

.lessons-list__item--active {
    background: rgba(67, 97, 238, 0.06);
    border-radius: var(--radius);
}

/* ---- Lesson Viewer ---- */
.lesson-viewer {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 0;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    margin-bottom: 24px;
}

.lesson-viewer iframe {
    width: 100%;
    height: 85vh;
    border: none;
    border-radius: var(--radius-lg);
    display: block;
}

.lesson-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

/* ---- Profile ---- */
.profile-section {
    max-width: 800px;
    margin: 0 auto;
}

.profile-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    margin-bottom: 24px;
}

.profile-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.profile-info {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 12px;
    font-size: 0.95rem;
}

.profile-info dt {
    font-weight: 600;
    color: var(--color-text-light);
}

.profile-info dd {
    color: var(--color-text);
}

/* ---- Admin ---- */
.admin-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: calc(100vh - 64px);
}

.admin-sidebar {
    background: var(--color-dark);
    padding: 24px 0;
}

.admin-sidebar__nav {
    list-style: none;
}

.admin-sidebar__nav a {
    display: block;
    padding: 12px 24px;
    color: rgba(255,255,255,0.7);
    font-weight: 500;
    font-size: 0.92rem;
    transition: all var(--transition);
}

.admin-sidebar__nav a:hover,
.admin-sidebar__nav a.active {
    background: rgba(255,255,255,0.1);
    color: var(--color-white);
}

.admin-content {
    padding: 32px;
}

.admin-content__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 24px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.stat-card__label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-card__value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-dark);
}

/* ---- Table ---- */
.table-wrapper {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

.table th {
    text-align: left;
    padding: 12px 16px;
    background: var(--color-bg);
    font-weight: 600;
    color: var(--color-text-light);
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}

.table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.table tr:hover td {
    background: rgba(67, 97, 238, 0.03);
}

/* ---- Badge ---- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
}

.badge--success {
    background: rgba(6, 214, 160, 0.12);
    color: #05a77e;
}

.badge--error {
    background: rgba(239, 71, 111, 0.12);
    color: #d63d62;
}

.badge--pending {
    background: rgba(255, 209, 102, 0.15);
    color: #a88a2a;
}

/* ---- Footer ---- */
.footer {
    background: var(--color-dark);
    color: rgba(255,255,255,0.6);
    padding: 48px 0 24px;
    margin-top: auto;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer__brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 12px;
}

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

.footer__desc {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 14px;
}

.footer__company {
    color: rgba(255,255,255,0.4);
    font-size: 0.8rem;
    line-height: 1.6;
}

.footer__anpc {
    display: inline-block;
    margin-top: 16px;
    transition: var(--transition);
    opacity: 0.85;
}

.footer__anpc:hover {
    opacity: 1;
    transform: scale(1.03);
}

.footer__anpc img {
    height: 40px;
    width: auto;
    border-radius: 4px;
}

.footer__heading {
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.footer__links {
    list-style: none;
}

.footer__links li {
    margin-bottom: 8px;
}

.footer__links a {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

.footer__links a:hover {
    color: var(--color-white);
}

.footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 0.85rem;
}

/* ---- Bundles ---- */
.bundles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
}

.bundle-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--color-accent);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
}

.bundle-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.bundle-card__badge {
    position: absolute;
    top: 14px;
    right: 14px;
    background: var(--color-success);
    color: #fff;
    font-weight: 800;
    font-size: 0.85rem;
    padding: 4px 12px;
    border-radius: 100px;
    z-index: 2;
}

.bundle-card__img {
    width: 100%;
    max-height: 180px;
    object-fit: contain;
    background: #f4f6fb;
    padding: 10px;
}

.bundle-card__img--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 120px;
    background: linear-gradient(135deg, var(--color-dark), var(--color-accent));
    color: rgba(255,255,255,0.4);
}

.bundle-card__body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.bundle-card__title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.bundle-card__desc {
    font-size: 0.92rem;
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.6;
}

.bundle-card__courses {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 18px;
}

.bundle-card__course-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-success);
    background: rgba(16, 185, 129, 0.08);
    padding: 4px 10px;
    border-radius: 100px;
}

.bundle-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
}

.bundle-card__pricing {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.bundle-card__price {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1.2;
}

.bundle-card__original-price {
    font-size: 0.88rem;
    color: var(--color-text-light);
    text-decoration: line-through;
}

.bundle-card--compact {
    border-color: var(--color-border);
}

.bundle-card--compact:hover {
    border-color: var(--color-accent);
}

.cd-hero__price-original {
    display: block;
    font-size: 1.1rem;
    color: var(--color-text-light);
    text-decoration: line-through;
    text-align: center;
}

.bundle-discount-badge {
    display: inline-block;
    background: var(--color-success);
    color: #fff;
    font-weight: 800;
    font-size: 0.85rem;
    padding: 2px 10px;
    border-radius: 100px;
    margin-left: 8px;
    vertical-align: middle;
}

/* ---- Legal Content ---- */
.legal-content {
    color: var(--color-text);
    line-height: 1.8;
}

.legal-content h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-top: 32px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
}

.legal-content p {
    margin-bottom: 12px;
}

.legal-content ul {
    margin-bottom: 16px;
    padding-left: 24px;
}

.legal-content ul li {
    margin-bottom: 6px;
}

.legal-content a {
    color: var(--color-accent);
    font-weight: 500;
}

.legal-content a:hover {
    text-decoration: underline;
}

/* ---- Payment Pages ---- */
.payment-result {
    text-align: center;
    padding: 80px 24px;
    max-width: 520px;
    margin: 0 auto;
}

.payment-result__icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 2.5rem;
}

.payment-result__icon--success {
    background: rgba(6, 214, 160, 0.12);
    color: var(--color-success);
}

.payment-result__icon--cancel {
    background: rgba(239, 71, 111, 0.12);
    color: var(--color-error);
}

.payment-result__title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.payment-result__text {
    color: var(--color-text-light);
    margin-bottom: 28px;
    line-height: 1.7;
}

/* ---- Utilities ---- */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__content {
        text-align: center;
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__trust {
        justify-content: center;
    }

    .hero__visual {
        max-width: 400px;
        margin: 0 auto;
    }

    .features-grid--2x3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .split-section {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .section__title {
        text-align: center !important;
    }

    .auth-page {
        grid-template-columns: 1fr;
    }

    .auth-panel {
        padding: 36px 32px;
    }

    .auth-panel__title {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .navbar__nav,
    .navbar__actions {
        display: none;
    }

    .navbar__toggle {
        display: flex;
    }

    .hero {
        padding: 50px 0 60px;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .hero__visual {
        display: none;
    }

    .stats-bar__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-bar__item {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .stats-bar__item:nth-child(odd) {
        border-right: 1px solid var(--color-border);
    }

    .stats-bar__item:nth-last-child(-n+2) {
        border-bottom: none;
    }

    .section {
        padding: 60px 0;
    }

    .features-grid--2x3 {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .cd-hero__inner {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .cd-hero__title {
        font-size: 1.8rem;
    }

    .cd-cta {
        padding: 40px 24px;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .admin-layout {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        display: none;
    }

    .auth-page {
        grid-template-columns: 1fr;
    }

    .auth-panel {
        display: none;
    }

    .auth-form-side {
        padding: 32px 20px;
    }

    .auth-card {
        padding: 28px 20px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .cta-card {
        padding: 40px 24px;
    }

    .cta-card__title {
        font-size: 1.5rem;
    }

    .hero__trust {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    .faq__question {
        padding: 14px 18px;
        font-size: 0.9rem;
    }

    .faq__answer {
        padding: 0 18px 14px;
    }
}

/* ===== ANALYTICS ===== */
.analytics-chart-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
}
.analytics-chart-card__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-dark);
}
.analytics-tables-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.analytics-section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-dark);
}
@media (max-width: 900px) {
    .analytics-tables-grid {
        grid-template-columns: 1fr;
    }
}