/* ==========================================================
   elearn Design — adapted for Óìíûé Êèò
   Color palette: #ff8a00 / #ff6600 / #ffae00 / #44425a / #6c6a74 / #f2f1f8
   ========================================================== */

:root {
    --el-primary: #ff8a00;
    --el-primary-dark: #ff6600;
    --el-primary-light: #ffae00;
    --el-heading: #44425a;
    --el-text: #6c6a74;
    --el-bg: #f2f1f8;
    --el-white: #ffffff;
}

/* ---------- Base ---------- */
html, body {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    line-height: 2.14;
    font-weight: 500;
    color: var(--el-text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main { flex: 1; }

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    color: var(--el-heading);
}

::selection {
    background: var(--el-primary);
    color: #fff;
}

a, .btn-link {
    color: var(--el-primary-dark);
    transition: all 200ms ease;
}

a:hover { color: var(--el-primary-light); }

/* ---------- Bootstrap overrides ---------- */
.btn-primary {
    background-color: var(--el-primary);
    border-color: var(--el-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: .04em;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--el-primary-light);
    border-color: var(--el-primary-light);
}

.btn-outline-primary {
    color: var(--el-primary);
    border-color: var(--el-primary);
}

.btn-outline-primary:hover {
    background-color: var(--el-primary);
    border-color: var(--el-primary);
    color: #fff;
}

.bg-primary { background-color: var(--el-primary) !important; }
.text-primary { color: var(--el-primary) !important; }

.btn-warning {
    background-color: var(--el-primary);
    border-color: var(--el-primary);
    color: #fff;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 13px;
}

.btn-warning:hover {
    background-color: var(--el-primary-light);
    border-color: var(--el-primary-light);
    color: #fff;
}

/* ---------- elearn-style button with arrow ---------- */
.el-btn {
    display: inline-block;
    height: 47px;
    background: var(--el-primary);
    position: relative;
    transition: all 200ms ease;
}

.el-btn a {
    display: block;
    position: relative;
    padding-left: 33px;
    padding-right: 77px;
    line-height: 47px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    text-transform: uppercase;
    white-space: nowrap;
    text-decoration: none;
}

.el-btn .btn-arrow {
    position: absolute;
    top: 0;
    right: 0;
    width: 44px;
    height: 100%;
    background: var(--el-primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 200ms ease;
    padding: 0;
    line-height: normal;
    font-size: 20px;
}

.el-btn:hover {
    background: var(--el-primary-light);
}

.el-btn:hover .btn-arrow {
    background: var(--el-primary);
}

/* ---------- Header (elearn) ---------- */
.el-header {
    background: var(--el-white);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    z-index: 1030;
}

.el-header-inner {
    display: flex;
    align-items: center;
    height: 96px;
    gap: 10px;
}

.el-logo {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    color: var(--el-heading);
    font-weight: 700;
    font-size: 22px;
    text-decoration: none;
    margin-right: 30px;
    flex-shrink: 0;
}

.el-logo:hover { color: var(--el-heading); }

.el-logo img {
    height: 54px;
}

.el-logo span {
    font-size: 26px;
    letter-spacing: .02em;
    color: var(--el-heading);
    line-height: 1;
}

.el-toggle {
    background: none;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 24px;
    padding: 4px 10px;
    cursor: pointer;
    margin-left: auto;
    color: var(--el-heading);
}

.el-nav {
    display: flex;
    align-items: center;
    gap: 0;
    flex: 1;
}

.el-nav-link {
    font-size: 14px;
    font-weight: 700;
    color: #2c2b31;
    text-transform: uppercase;
    letter-spacing: .03em;
    padding: 0 15px;
    white-space: nowrap;
    text-decoration: none;
    transition: color 200ms ease;
}

.el-nav-link:hover,
.el-nav-link.active {
    color: var(--el-primary-dark);
}

.el-auth {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.el-header .btn-outline-el {
    display: inline-block;
    border: 2px solid var(--el-primary);
    color: var(--el-primary);
    background: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    padding: 6px 20px;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition: all 200ms ease;
}

.el-header .btn-outline-el:hover {
    background: var(--el-primary);
    color: #fff;
}

/* Mobile: hide nav and auth when collapsed */
@media (max-width: 991.98px) {
    .el-header-inner {
        flex-wrap: wrap;
        height: auto;
        min-height: 96px;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .el-logo {
        margin-right: auto;
    }

    .el-nav,
    .el-auth {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        overflow: hidden;
    }

    .el-nav {
        border-top: 1px solid #eee;
        margin-top: 10px;
        padding-top: 5px;
        padding-bottom: 10px;
    }

    .el-nav-link {
        padding: 8px 0;
        width: 100%;
    }

    .el-auth {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
        padding-top: 5px;
        padding-bottom: 10px;
    }

    .el-nav-collapsed {
        display: none;
    }
}

@media (min-width: 992px) {
    .el-toggle { display: none; }
}

/* ---------- Hero (elearn home) ---------- */
.hero-section {
    position: relative;
    background: url('images/hero-bg.jpg') center center / cover no-repeat;
    padding: 0;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,.45) 0%, rgba(0,0,0,.6) 100%);
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #fff;
}

.hero-section .lead {
    color: rgba(255, 255, 255, .85);
}

.hero-logo {
    max-width: 120px;
    margin-bottom: 30px;
}

/* ---------- Section titles (elearn style) ---------- */
.section_title h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--el-heading);
}

.section_subtitle {
    color: var(--el-text);
    margin-top: 18px;
    line-height: 2.14;
}

.section-page {
    padding-top: 80px;
    padding-bottom: 80px;
}

/* ---------- Cards (elearn course cards) ---------- */
.card {
    border: none;
    border-radius: 0;
    transition: transform 200ms ease, box-shadow 200ms ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08) !important;
}

.subject-card {
    background: var(--el-bg);
    border-radius: 0;
}

.subject-card .card-body {
    padding: 2rem 1.5rem;
}

.subject-card i.display-4,
.subject-card i.display-3 {
    font-size: 3rem;
    color: var(--el-primary) !important;
}

.subject-card h5 {
    color: var(--el-heading);
    font-weight: 600;
}

.subject-card .btn-outline-primary {
    border-color: var(--el-primary-dark);
    color: var(--el-primary-dark);
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 600;
}

.subject-card .btn-outline-primary:hover {
    background: var(--el-primary-dark);
    color: #fff;
}

/* ---------- Advantage cards ---------- */
.advantage-card {
    background: #fff;
    border-radius: 0;
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
    transition: all 200ms ease;
}

.advantage-card:hover {
    box-shadow: 0 5px 25px rgba(0,0,0,0.08);
    transform: translateY(-3px);
}

.advantage-card i {
    color: var(--el-primary) !important;
}

.advantage-card h5 {
    color: var(--el-heading);
    font-weight: 600;
}

/* ---------- Milestones (elearn counters) ---------- */
.milestones-section {
    position: relative;
    background: var(--el-heading);
    padding: 80px 0;
    color: #fff;
}

.milestone-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
}

.milestone-icon img {
    max-width: 100%;
}

.milestone-counter {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
}

.milestone-text {
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,.7);
    text-transform: uppercase;
    letter-spacing: .05em;
}

/* ---------- Lesson list ---------- */
.lesson-item {
    transition: background-color 200ms ease;
    border-left: 3px solid transparent;
}

.lesson-item:hover {
    background-color: var(--el-bg);
    border-left-color: var(--el-primary);
}

.lesson-item .badge {
    background-color: var(--el-primary) !important;
}

/* ---------- Breadcrumbs ---------- */
.breadcrumb-item a {
    color: var(--el-primary-dark);
}

.breadcrumb-item a:hover {
    color: var(--el-primary);
}

.breadcrumb-item.active {
    color: var(--el-text);
}

/* ---------- Quiz ---------- */
.quiz-section .card {
    border-left: 4px solid var(--el-primary);
    border-radius: 0;
}

.quiz-correct {
    background-color: #d1fae5 !important;
    border-left-color: #10b981 !important;
}

.quiz-incorrect {
    background-color: #fee2e2 !important;
    border-left-color: #ef4444 !important;
}

/* ---------- CTA (join) section ---------- */
.cta-section {
    background: var(--el-primary);
    padding: 80px 0;
}

.cta-section h2 {
    color: #fff;
    font-weight: 700;
}

.cta-section p {
    color: rgba(255,255,255,.85);
}

.cta-section .btn {
    background: var(--el-primary-dark);
    border-color: var(--el-primary-dark);
    color: #fff;
    font-weight: 600;
    text-transform: uppercase;
}

.cta-section .btn:hover {
    background: var(--el-primary-light);
    border-color: var(--el-primary-light);
}

/* ---------- Footer (elearn style) ---------- */
.el-footer {
    background: var(--el-bg);
    padding-top: 90px;
    padding-bottom: 70px;
    color: var(--el-text);
}

.el-footer h5,
.el-footer .footer-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--el-heading);
}

.el-footer .footer-brand {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    margin-bottom: 20px;
}

.el-footer .footer-brand img {
    height: 44px;
}

.el-footer .footer-brand span {
    font-size: 22px;
    font-weight: 700;
    color: var(--el-heading);
}

.el-footer a {
    color: var(--el-text);
    font-size: 14px;
    font-weight: 500;
    transition: color 200ms ease;
    text-decoration: none;
}

.el-footer a:hover {
    color: var(--el-primary);
}

.el-footer .footer-social a {
    display: inline-block;
    margin-right: 20px;
    font-size: 16px;
    color: var(--el-primary-dark);
}

.el-footer .footer-social a:hover {
    color: var(--el-primary-light);
}

.el-footer .footer-contact-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--el-primary-dark);
}

.el-footer .footer-contact-line {
    font-size: 14px;
    color: var(--el-text);
    margin-top: 3px;
}

.el-footer .copyright {
    font-size: 12px;
    font-weight: 500;
    color: #b3b3b3;
    margin-top: 50px;
}

.el-footer hr {
    border-color: #d9d9d9;
}

/* ---------- Page header banner ---------- */
.page-header {
    position: relative;
    background: var(--el-heading);
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    color: #fff;
    font-size: 36px;
    font-weight: 700;
}

.page-header .breadcrumb {
    justify-content: center;
    background: transparent;
    margin-bottom: 0;
}

.page-header .breadcrumb-item,
.page-header .breadcrumb-item a {
    color: rgba(255,255,255,.7);
}

.page-header .breadcrumb-item.active {
    color: #fff;
}

.page-header .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255,255,255,.5);
}

/* ---------- Spinner ---------- */
.spinner-border {
    color: var(--el-primary) !important;
}

/* ---------- Alert overrides ---------- */
.alert-success { border-left: 4px solid #10b981; }
.alert-warning { border-left: 4px solid var(--el-primary); }
.alert-danger  { border-left: 4px solid #ef4444; }

/* ---------- Contact form ---------- */
.contact-input {
    border: none;
    border-radius: 0;
    border-bottom: 2px solid #d9d9d9;
    background: #fff;
    padding-left: 12px;
    transition: border-color 200ms ease;
}

.contact-input:focus {
    border-color: var(--el-primary);
    box-shadow: none;
    background: #fff;
}

/* ---------- el-btn as submit wrapper ---------- */
.el-btn button[type="submit"] {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
}

/* Section Pages */
.section-page {
    padding: 3rem 0;
}

.section-page h1 {
    font-weight: 700;
    margin-bottom: 2rem;
}

/* Dashboard */
.dashboard-stat {
    border-radius: 12px;
    padding: 1.5rem;
}

/* Admin Styles */
.admin-header {
    background: linear-gradient(135deg, #1e293b, #334155);
    color: white;
    padding: 1.5rem 0;
    margin-bottom: 2rem;
}

/* Footer */
footer a:hover {
    color: #ffffff !important;
}

/* Navbar */
.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
    color: #ffffff;
}

/* Validation */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

/* Blazor error */
.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        padding: 40px 0;
    }
    .hero-section h1 {
        font-size: 1.8rem;
    }
}