/* ===================================
   CURSO MICROSOFT 365 - NEOBRUTALIST
   =================================== */

/* Variables CSS */
:root {
    --color-primary: #4361ee;
    --color-secondary: #7209b7;
    --color-success: #06d6a0;
    --color-warning: #ffd166;
    --color-danger: #ef476f;
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray: #e9ecef;
    --color-dark-gray: #495057;

    --border-width: 3px;
    --shadow-offset: 4px;
    --shadow-brutal: var(--shadow-offset) var(--shadow-offset) 0 var(--color-black);
    --shadow-brutal-lg: 6px 6px 0 var(--color-black);
    --shadow-brutal-hover: 6px 6px 0 var(--color-black);

    --sidebar-width: 280px;
    --header-height: 70px;
    --transition: 0.15s ease;

    --font-main: 'Space Grotesk', 'Inter', system-ui, sans-serif;
    --font-mono: 'Space Mono', 'Fira Code', monospace;
}

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

/* Reset y base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-gray);
    color: var(--color-black);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===================================
   HEADER - NEOBRUTALIST
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-warning);
    color: var(--color-black);
    display: flex;
    align-items: center;
    padding: 0 20px;
    z-index: 1000;
    border-bottom: var(--border-width) solid var(--color-black);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 32px;
    height: 24px;
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    cursor: pointer;
    padding: 4px;
    margin-right: 15px;
    box-shadow: var(--shadow-brutal);
}

.menu-toggle:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--color-black);
}

.menu-toggle span {
    display: block;
    height: 3px;
    background: var(--color-black);
}

.header-title {
    flex: 1;
}

.header-title h1 {
    font-size: 1.4rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.header-subtitle {
    font-size: 0.8rem;
    font-weight: 500;
    opacity: 0.8;
}

.header-progress {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-right: 20px;
}

.progress-container {
    width: 150px;
    height: 20px;
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
}

.progress-bar {
    height: 100%;
    background: var(--color-success);
    transition: width 0.5s ease;
    width: 0%;
}

.progress-text {
    font-size: 0.85rem;
    font-weight: 700;
    font-family: var(--font-mono);
    white-space: nowrap;
}

.header-user {
    font-weight: 700;
    background: var(--color-white);
    padding: 6px 12px;
    border: var(--border-width) solid var(--color-black);
}

/* ===================================
   COMPLETION BANNER - STICKY
   =================================== */
.completion-banner {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-primary);
    color: var(--color-white);
    z-index: 999;
    border-bottom: var(--border-width) solid var(--color-black);
    box-shadow: 0 4px 0 var(--color-black);
}

.completion-banner.active {
    display: block;
}

.completion-banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 50px 12px 20px;
    max-width: 100%;
    font-size: 0.95rem;
}

.completion-banner-content i:first-child {
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.completion-banner-content a {
    color: var(--color-warning);
    font-weight: 700;
    text-decoration: underline;
}

.completion-banner-content a:hover {
    color: var(--color-white);
}

.completion-banner-close {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: 2px solid var(--color-white);
    color: var(--color-white);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
}

.completion-banner-close:hover {
    background: var(--color-white);
    color: var(--color-primary);
}

/* Adjust main content when banner is visible */
body.banner-visible .main-content {
    margin-top: calc(var(--header-height) + 50px);
}

body.banner-visible .sidebar {
    top: calc(var(--header-height) + 50px);
    height: calc(100vh - var(--header-height) - 50px);
}

/* ===================================
   SIDEBAR - NEOBRUTALIST
   =================================== */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: var(--color-white);
    border-right: var(--border-width) solid var(--color-black);
    display: flex;
    flex-direction: column;
    z-index: 900;
    transition: transform var(--transition);
}

.sidebar-header {
    padding: 20px;
    border-bottom: var(--border-width) solid var(--color-black);
    background: var(--color-primary);
    color: var(--color-white);
}

.sidebar-header h2 {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    text-decoration: none;
    color: var(--color-black);
    transition: all var(--transition);
    border-bottom: 2px solid var(--color-gray);
    font-weight: 500;
}

.nav-item:hover {
    background: var(--color-warning);
}

.nav-item.active {
    background: var(--color-black);
    color: var(--color-white);
}

.nav-item.completed {
    background: var(--color-success);
    color: var(--color-black);
}

.nav-icon {
    font-size: 1.1rem;
    margin-right: 12px;
    width: 24px;
    text-align: center;
}

.nav-text {
    flex: 1;
    font-size: 0.9rem;
}

.nav-status {
    font-size: 1rem;
    font-weight: 700;
}

.nav-status.completed::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: var(--border-width) solid var(--color-black);
    background: var(--color-gray);
}

/* ===================================
   MAIN CONTENT
   =================================== */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
    padding: 30px;
    background: repeating-linear-gradient(
        -45deg,
        var(--color-gray),
        var(--color-gray) 10px,
        #e0e3e7 10px,
        #e0e3e7 20px
    );
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

/* ===================================
   BUTTONS - NEOBRUTALIST
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: var(--border-width) solid var(--color-black);
    font-size: 1rem;
    font-weight: 700;
    font-family: var(--font-main);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-brutal);
}

.btn:active {
    transform: translate(var(--shadow-offset), var(--shadow-offset));
    box-shadow: none;
}

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

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

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

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

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

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

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
}

/* ===================================
   CARDS - NEOBRUTALIST
   =================================== */
.card {
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal-lg);
    margin-bottom: 25px;
}

.card-header {
    padding: 20px;
    border-bottom: var(--border-width) solid var(--color-black);
    background: var(--color-primary);
    color: var(--color-white);
}

.card-body {
    padding: 25px;
}

/* ===================================
   WELCOME SECTION
   =================================== */
.welcome-card {
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal-lg);
    padding: 30px;
    margin-bottom: 30px;
}

.welcome-card h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.user-setup {
    margin-top: 25px;
    padding-top: 25px;
    border-top: var(--border-width) solid var(--color-black);
}

.user-setup label {
    display: block;
    margin-bottom: 10px;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.input-group {
    display: flex;
    gap: 0;
    max-width: 450px;
}

.input-group input {
    flex: 1;
    padding: 12px 15px;
    border: var(--border-width) solid var(--color-black);
    border-right: none;
    font-size: 1rem;
    font-family: var(--font-main);
}

.input-group input:focus {
    outline: none;
    background: var(--color-warning);
}

.input-group .btn {
    border-left: none;
}

.greeting {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

/* ===================================
   MODULE GRID
   =================================== */
.overview-section h3,
.progress-section h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.module-card {
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal);
    padding: 25px;
    text-decoration: none;
    color: var(--color-black);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.module-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--color-primary);
}

.module-card:hover {
    transform: translate(-4px, -4px);
    box-shadow: 8px 8px 0 var(--color-black);
}

.module-card.completed::before {
    background: var(--color-success);
}

.module-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--color-primary);
}

.module-card h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.module-card p {
    font-size: 0.9rem;
    color: var(--color-dark-gray);
    margin-bottom: 15px;
}

.module-meta {
    display: flex;
    gap: 8px;
}

.badge {
    padding: 4px 10px;
    border: 2px solid var(--color-black);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-quiz {
    background: var(--color-primary);
    color: var(--color-white);
}

.badge-exercise {
    background: var(--color-success);
    color: var(--color-black);
}

.badge-faq {
    background: var(--color-warning);
    color: var(--color-black);
}

/* ===================================
   PROGRESS SECTION
   =================================== */
.progress-overview {
    display: flex;
    align-items: center;
    gap: 40px;
    background: var(--color-white);
    padding: 30px;
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal-lg);
}

.progress-circle {
    position: relative;
    width: 160px;
    height: 160px;
    background: var(--color-gray);
    border: var(--border-width) solid var(--color-black);
}

.progress-circle svg {
    transform: rotate(-90deg);
}

.progress-circle .progress-bg {
    fill: none;
    stroke: var(--color-gray);
    stroke-width: 12;
}

.progress-circle .progress-fill {
    fill: none;
    stroke: var(--color-success);
    stroke-width: 12;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 1s ease;
}

.progress-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.progress-stats {
    display: flex;
    gap: 30px;
}

.stat {
    text-align: center;
    padding: 20px;
    background: var(--color-gray);
    border: var(--border-width) solid var(--color-black);
}

.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-dark-gray);
}

.certificate-section {
    margin-top: 30px;
    text-align: center;
}

/* ===================================
   ALERTS - NEOBRUTALIST
   =================================== */
.alert {
    padding: 20px;
    border: var(--border-width) solid var(--color-black);
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.alert i {
    font-size: 1.5rem;
}

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

.alert-info {
    background: var(--color-primary);
    color: var(--color-white);
}

.alert-warning {
    background: var(--color-warning);
}

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

/* ===================================
   MODULE PAGE STYLES
   =================================== */
.module-header {
    background: var(--color-white);
    padding: 30px;
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal-lg);
    margin-bottom: 30px;
    position: relative;
}

.module-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 10px;
    background: var(--color-primary);
}

.module-header h1 {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.8rem;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.module-header h1 i {
    color: var(--color-primary);
}

.module-header p {
    color: var(--color-dark-gray);
    font-size: 1.1rem;
}

/* ===================================
   SLIDES CONTAINER
   =================================== */
.slides-container {
    position: relative;
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal-lg);
    margin-bottom: 30px;
    overflow: hidden;
}

.slides-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--color-black);
    color: var(--color-white);
}

.slides-title {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.slides-counter {
    font-family: var(--font-mono);
    font-weight: 700;
}

.slides-progress {
    height: 6px;
    background: var(--color-gray);
}

.slides-progress-bar {
    height: 100%;
    background: var(--color-success);
    transition: width 0.3s ease;
}

.slides-wrapper {
    display: flex;
    transition: transform 0.4s ease;
}

.slide {
    min-width: 100%;
    padding: 30px;
}

.slide h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.4rem;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: var(--border-width) solid var(--color-black);
    text-transform: uppercase;
}

.slide h2 i {
    color: var(--color-primary);
}

.slide h3 {
    font-size: 1.1rem;
    margin: 25px 0 15px;
    text-transform: uppercase;
    color: var(--color-secondary);
}

.slide p {
    margin-bottom: 15px;
    font-size: 1.05rem;
    line-height: 1.7;
}

.slide ul, .slide ol {
    margin: 15px 0;
    padding-left: 25px;
}

.slide li {
    margin-bottom: 12px;
    line-height: 1.6;
}

.slides-nav {
    display: flex;
    justify-content: space-between;
    padding: 20px;
    border-top: var(--border-width) solid var(--color-black);
    background: var(--color-gray);
}

.slide-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-brutal);
}

.slide-btn:hover:not(:disabled) {
    background: var(--color-primary);
    color: var(--color-white);
}

.slide-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.slide-btn:active:not(:disabled) {
    transform: translate(var(--shadow-offset), var(--shadow-offset));
    box-shadow: none;
}

.slides-dots {
    display: flex;
    gap: 8px;
    align-items: center;
}

.slide-dot {
    width: 14px;
    height: 14px;
    background: var(--color-white);
    border: 2px solid var(--color-black);
    cursor: pointer;
    transition: all var(--transition);
}

.slide-dot.active {
    background: var(--color-primary);
    transform: scale(1.2);
}

.slide-dot.completed {
    background: var(--color-success);
}

/* Step List in slides */
.step-list {
    counter-reset: step;
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.step-list li {
    position: relative;
    padding: 15px 15px 15px 60px;
    background: var(--color-gray);
    border: 2px solid var(--color-black);
    margin-bottom: 10px;
}

.step-list li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-mono);
    border: 2px solid var(--color-black);
}

/* Info Boxes in slides */
.info-box {
    padding: 20px;
    border: var(--border-width) solid var(--color-black);
    margin: 20px 0;
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.info-box i {
    font-size: 1.5rem;
}

.info-box.tip {
    background: var(--color-success);
}

.info-box.important {
    background: var(--color-danger);
    color: var(--color-white);
}

.info-box.note {
    background: var(--color-warning);
}

.info-box-content strong {
    display: block;
    margin-bottom: 5px;
    text-transform: uppercase;
    font-size: 0.85rem;
}

/* ===================================
   QUIZ STYLES - NEOBRUTALIST
   =================================== */
.quiz-section {
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal-lg);
    margin: 30px 0;
    overflow: hidden;
}

.quiz-header {
    padding: 20px;
    background: var(--color-secondary);
    color: var(--color-white);
    border-bottom: var(--border-width) solid var(--color-black);
}

.quiz-header h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    text-transform: uppercase;
}

.quiz-body {
    padding: 25px;
}

.quiz-question {
    margin-bottom: 25px;
    padding: 20px;
    background: var(--color-gray);
    border: 2px solid var(--color-black);
}

.quiz-question h4 {
    margin-bottom: 15px;
    font-size: 1.05rem;
    font-weight: 700;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.quiz-option {
    display: flex;
    align-items: center;
    padding: 15px;
    background: var(--color-white);
    border: 2px solid var(--color-black);
    cursor: pointer;
    transition: all var(--transition);
}

.quiz-option:hover {
    background: var(--color-warning);
    transform: translateX(5px);
}

.quiz-option.selected {
    background: var(--color-primary);
    color: var(--color-white);
}

.quiz-option.correct {
    background: var(--color-success);
    color: var(--color-black);
}

.quiz-option.incorrect {
    background: var(--color-danger);
    color: var(--color-white);
}

.quiz-option input {
    display: none;
}

.quiz-option i {
    margin-right: 12px;
    width: 20px;
}

.quiz-feedback {
    margin-top: 10px;
    padding: 10px 15px;
    font-weight: 700;
    display: none;
}

.quiz-feedback.correct {
    display: block;
    background: var(--color-success);
    border: 2px solid var(--color-black);
}

.quiz-feedback.incorrect {
    display: block;
    background: var(--color-danger);
    color: var(--color-white);
    border: 2px solid var(--color-black);
}

.quiz-result {
    text-align: center;
    padding: 25px;
    margin-top: 20px;
    border: var(--border-width) solid var(--color-black);
    display: none;
}

.quiz-result.passed {
    display: block;
    background: var(--color-success);
}

.quiz-result.failed {
    display: block;
    background: var(--color-danger);
    color: var(--color-white);
}

.quiz-result h3 {
    margin-bottom: 10px;
    font-size: 1.5rem;
    text-transform: uppercase;
}

.quiz-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 20px;
}

/* ===================================
   EXERCISES STYLES - ENHANCED
   =================================== */
.exercises-intro {
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal-lg);
    padding: 30px;
    margin-bottom: 30px;
    position: relative;
}

.exercises-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: repeating-linear-gradient(
        90deg,
        var(--color-primary),
        var(--color-primary) 20px,
        var(--color-secondary) 20px,
        var(--color-secondary) 40px
    );
}

.exercises-intro h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.exercises-stats {
    display: flex;
    gap: 20px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.exercise-stat {
    background: var(--color-gray);
    border: var(--border-width) solid var(--color-black);
    padding: 15px 25px;
    text-align: center;
    flex: 1;
    min-width: 120px;
}

.exercise-stat-value {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-primary);
    display: block;
}

.exercise-stat-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-dark-gray);
}

.exercise-card {
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    box-shadow: var(--shadow-brutal-lg);
    margin-bottom: 25px;
    overflow: hidden;
    transition: all var(--transition);
}

.exercise-card:hover {
    transform: translate(-2px, -2px);
    box-shadow: 8px 8px 0 var(--color-black);
}

.exercise-card.all-completed {
    border-color: var(--color-success);
}

.exercise-card.all-completed .exercise-header {
    background: var(--color-success);
    color: var(--color-black);
}

.exercise-header {
    padding: 20px 25px;
    background: var(--color-primary);
    color: var(--color-white);
    border-bottom: var(--border-width) solid var(--color-black);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.exercise-header-top {
    display: flex;
    align-items: center;
    gap: 15px;
}

.exercise-number {
    background: var(--color-warning);
    color: var(--color-black);
    width: 45px;
    height: 45px;
    min-width: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 700;
    font-family: var(--font-mono);
    border: var(--border-width) solid var(--color-black);
    box-shadow: 3px 3px 0 var(--color-black);
}

.exercise-header-content {
    flex: 1;
}

.exercise-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    text-transform: uppercase;
    margin: 0;
}

.exercise-header h3 i {
    font-size: 1.2rem;
}

.exercise-header p {
    margin-top: 6px;
    font-size: 0.9rem;
    opacity: 0.9;
}

.exercise-progress-bar {
    height: 8px;
    background: rgba(0,0,0,0.2);
    border: 2px solid var(--color-black);
    position: relative;
    overflow: hidden;
}

.exercise-progress-fill {
    height: 100%;
    background: var(--color-warning);
    transition: width 0.5s ease;
    position: relative;
}

.exercise-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 5px,
        rgba(0,0,0,0.1) 5px,
        rgba(0,0,0,0.1) 10px
    );
}

.exercise-body {
    padding: 0;
}

.exercise-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    background: var(--color-gray);
    border-bottom: 2px solid var(--color-black);
    font-size: 0.85rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.exercise-progress-text {
    color: var(--color-dark-gray);
}

.exercise-progress-badge {
    background: var(--color-black);
    color: var(--color-white);
    padding: 4px 12px;
    font-size: 0.75rem;
    text-transform: uppercase;
}

.exercise-progress-badge.complete {
    background: var(--color-success);
    color: var(--color-black);
}

.exercise-steps {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: step;
}

.exercise-step {
    display: flex;
    align-items: stretch;
    border-bottom: 2px solid var(--color-black);
    background: var(--color-white);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.exercise-step:last-child {
    border-bottom: none;
}

.exercise-step::before {
    counter-increment: step;
    content: counter(step);
    min-width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray);
    font-weight: 700;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    border-right: 2px solid var(--color-black);
    color: var(--color-dark-gray);
}

.exercise-step:hover {
    background: #fffbeb;
}

.exercise-step:hover::before {
    background: var(--color-warning);
    color: var(--color-black);
}

.exercise-step-content {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 18px 20px;
    gap: 15px;
    cursor: pointer;
}

.exercise-step input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 28px;
    height: 28px;
    min-width: 28px;
    background: var(--color-white);
    border: 3px solid var(--color-black);
    cursor: pointer;
    position: relative;
    transition: all var(--transition);
}

.exercise-step input[type="checkbox"]:hover {
    background: var(--color-warning);
}

.exercise-step input[type="checkbox"]:checked {
    background: var(--color-success);
}

.exercise-step input[type="checkbox"]:checked::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1rem;
    color: var(--color-black);
}

.exercise-step label {
    flex: 1;
    cursor: pointer;
    line-height: 1.5;
    font-size: 0.95rem;
}

.exercise-step.completed {
    background: #d1fae5;
}

.exercise-step.completed::before {
    background: var(--color-success);
    color: var(--color-black);
}

.exercise-step.completed label {
    text-decoration: line-through;
    color: var(--color-dark-gray);
}

.exercise-footer {
    padding: 15px 25px;
    background: var(--color-gray);
    border-top: 2px solid var(--color-black);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.exercise-footer .btn {
    font-size: 0.8rem;
    padding: 10px 18px;
}

/* Celebration animation */
@keyframes celebrate {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.exercise-card.celebrating {
    animation: celebrate 0.5s ease;
    border-color: var(--color-success);
    box-shadow: 0 0 0 4px var(--color-success), 8px 8px 0 var(--color-black);
}

/* Confetti burst effect */
.confetti-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    animation: confetti-fall 1s ease-out forwards;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100px) rotate(720deg);
        opacity: 0;
    }
}

/* ===================================
   CONTENT SECTION HEADERS
   =================================== */
.content-section {
    margin-bottom: 30px;
}

.content-section h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--color-black);
    color: var(--color-white);
    padding: 15px 20px;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: var(--border-width) solid var(--color-black);
    margin-bottom: 0;
    position: relative;
}

.content-section h2 i {
    background: var(--color-warning);
    color: var(--color-black);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border: 2px solid var(--color-black);
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 20px;
    right: 20px;
    height: 6px;
    background: repeating-linear-gradient(
        90deg,
        var(--color-primary),
        var(--color-primary) 10px,
        var(--color-secondary) 10px,
        var(--color-secondary) 20px
    );
}

/* ===================================
   FAQ ACCORDION - NEOBRUTALIST
   =================================== */
.faq-item {
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    border-top: none;
    margin-bottom: 0;
}

.faq-item:last-child {
    box-shadow: var(--shadow-brutal);
    margin-bottom: 10px;
}

.faq-question {
    width: 100%;
    padding: 18px 20px;
    background: var(--color-white);
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-main);
    color: var(--color-black);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: background var(--transition);
}

.faq-question .faq-icon {
    min-width: 20px;
    text-align: center;
    transition: transform var(--transition);
}

.faq-question:hover {
    background: var(--color-warning);
}

.faq-item.active .faq-question {
    background: var(--color-primary);
    color: var(--color-white);
}

.faq-item.active .faq-question .faq-icon {
    transform: rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    border-top: 0 solid var(--color-black);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 20px;
    border-top-width: 2px;
    background: var(--color-gray);
}

.faq-answer p {
    line-height: 1.7;
    margin-bottom: 12px;
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul, .faq-answer ol {
    margin: 15px 0;
    padding-left: 25px;
}

.faq-answer li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* ===================================
   NAVIGATION BUTTONS
   =================================== */
.module-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 20px;
    border-top: var(--border-width) solid var(--color-black);
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    text-decoration: none;
    color: var(--color-black);
    font-weight: 700;
    text-transform: uppercase;
    box-shadow: var(--shadow-brutal);
    transition: all var(--transition);
}

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

.nav-btn:active {
    transform: translate(var(--shadow-offset), var(--shadow-offset));
    box-shadow: none;
}

.nav-btn.next {
    margin-left: auto;
}

/* ===================================
   CERTIFICATE MODAL
   =================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--color-white);
    border: var(--border-width) solid var(--color-black);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 10px 10px 0 var(--color-black);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: var(--color-danger);
    border: 2px solid var(--color-black);
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-white);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.certificate {
    padding: 40px;
}

.certificate-border {
    border: 6px solid var(--color-primary);
    padding: 20px;
}

.certificate-inner {
    border: 3px solid var(--color-black);
    padding: 40px;
    text-align: center;
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
}

.certificate-header h2 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 4px;
}

.certificate-text {
    font-size: 1.1rem;
    color: var(--color-dark-gray);
    margin: 10px 0;
}

.certificate-name {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    margin: 25px 0;
    font-family: var(--font-main);
    border-bottom: 3px solid var(--color-black);
    padding-bottom: 10px;
    display: inline-block;
}

.certificate-course {
    font-size: 1.4rem;
    color: var(--color-secondary);
    margin: 25px 0;
    line-height: 1.4;
    text-transform: uppercase;
}

.certificate-date {
    margin-top: 30px;
    color: var(--color-dark-gray);
    font-family: var(--font-mono);
}

.certificate-footer {
    margin-top: 40px;
}

.certificate-signature {
    display: inline-block;
}

.signature-line {
    width: 200px;
    height: 3px;
    background: var(--color-black);
    margin-bottom: 5px;
}

.certificate-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    border-top: var(--border-width) solid var(--color-black);
    background: var(--color-gray);
}

/* ===================================
   TABLE STYLES
   =================================== */
.table-container {
    overflow-x: auto;
    margin: 20px 0;
    border: var(--border-width) solid var(--color-black);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
}

th, td {
    padding: 15px;
    text-align: left;
    border: 2px solid var(--color-black);
}

th {
    background: var(--color-black);
    color: var(--color-white);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
}

tr:nth-child(even) {
    background: var(--color-gray);
}

/* ===================================
   OVERLAY
   =================================== */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    z-index: 800;
}

.overlay.active {
    display: block;
}

/* ===================================
   RESPONSIVE STYLES
   =================================== */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .header-progress {
        display: none;
    }

    .progress-overview {
        flex-direction: column;
        text-align: center;
    }

    .progress-stats {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .header-title h1 {
        font-size: 1rem;
    }

    .header-subtitle {
        display: none;
    }

    .main-content {
        padding: 20px 15px;
    }

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

    .welcome-card, .slide {
        padding: 20px;
    }

    .input-group {
        flex-direction: column;
    }

    .input-group input {
        border-right: var(--border-width) solid var(--color-black);
        border-bottom: none;
    }

    .module-navigation {
        flex-direction: column;
        gap: 10px;
    }

    .nav-btn {
        justify-content: center;
    }

    .certificate {
        padding: 20px;
    }

    .certificate-inner {
        padding: 20px;
    }

    .certificate-name {
        font-size: 1.6rem;
    }

    .certificate-actions {
        flex-direction: column;
    }

    .slides-nav {
        flex-wrap: wrap;
        gap: 15px;
    }

    .slides-dots {
        order: 3;
        width: 100%;
        justify-content: center;
    }

    /* Enhanced exercises responsive */
    .exercises-intro {
        padding: 20px;
    }

    .exercises-stats {
        flex-direction: column;
        gap: 10px;
    }

    .exercise-stat {
        padding: 12px 20px;
    }

    .exercise-stat-value {
        font-size: 1.5rem;
    }

    .exercise-header {
        padding: 15px;
    }

    .exercise-header-top {
        gap: 12px;
    }

    .exercise-number {
        width: 38px;
        height: 38px;
        min-width: 38px;
        font-size: 1.2rem;
    }

    .exercise-header h3 {
        font-size: 0.95rem;
    }

    .exercise-header p {
        font-size: 0.8rem;
    }

    .exercise-step::before {
        min-width: 40px;
        font-size: 0.95rem;
    }

    .exercise-step-content {
        padding: 14px 15px;
        gap: 12px;
    }

    .exercise-step input[type="checkbox"] {
        width: 24px;
        height: 24px;
        min-width: 24px;
    }

    .exercise-step label {
        font-size: 0.9rem;
    }

    .exercise-progress {
        padding: 12px 20px;
        flex-wrap: wrap;
        gap: 8px;
    }

    .exercise-footer {
        padding: 12px 20px;
    }

    /* FAQ section headers responsive */
    .content-section h2 {
        padding: 12px 15px;
        font-size: 0.95rem;
        gap: 10px;
    }

    .content-section h2 i {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .faq-question {
        padding: 15px;
        font-size: 0.9rem;
    }

    /* Completion banner responsive */
    .completion-banner-content {
        padding: 10px 40px 10px 15px;
        font-size: 0.85rem;
        text-align: left;
    }

    .completion-banner-content i:first-child {
        display: none;
    }

    body.banner-visible .main-content {
        margin-top: calc(var(--header-height) + 60px);
    }

    body.banner-visible .sidebar {
        top: calc(var(--header-height) + 60px);
        height: calc(100vh - var(--header-height) - 60px);
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0 10px;
    }

    .header-user {
        display: none;
    }

    .progress-stats {
        gap: 15px;
    }

    .stat {
        padding: 15px;
    }

    .stat-value {
        font-size: 1.8rem;
    }
}

/* ===================================
   PRINT STYLES
   =================================== */
@media print {
    .header, .sidebar, .module-navigation, .quiz-section, .modal-close, .certificate-actions, .slides-nav {
        display: none !important;
    }

    .main-content {
        margin: 0;
        padding: 0;
        background: white;
    }

    .certificate {
        padding: 0;
    }

    .card, .slides-container {
        box-shadow: none;
        border: 1px solid #000;
    }
}