/* Main CSS - Boncuk Ustalık Okulu */
/* Completely original design */

:root {
    --primary-color: #1a237e;
    --secondary-color: #5c6bc0;
    --accent-color: #ff6b6b;
    --accent-secondary: #4ecdc4;
    --text-dark: #1a237e;
    --text-light: #546e7a;
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --border-color: #e1e8ed;
    --shadow: 0 4px 15px rgba(26, 35, 126, 0.1);
    --shadow-hover: 0 8px 25px rgba(26, 35, 126, 0.15);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary-color);
}

h1 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    color: var(--primary-color);
    position: relative;
}

h3 {
    color: var(--primary-color);
    font-weight: 600;
}

p {
    color: var(--text-light);
    font-size: 1.05rem;
}

.site-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.top-navigation {
    background: var(--bg-white);
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-color);
}

.brand-icon {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    transition: all 0.3s;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--secondary-color);
    transform: translateY(-2px);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-menu-btn span {
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    transition: all 0.3s;
    border-radius: 2px;
}

/* Mobile Menu Styles */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-white);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 1000;
        gap: 0;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links a {
        display: block;
        padding: 1.25rem 0;
        font-size: 1.1rem;
    }

    .nav-links a.active::after {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }
}

/* Welcome Banner */
.welcome-banner {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 5rem 20px;
    position: relative;
    overflow: hidden;
}

.banner-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.banner-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.5px;
}

.banner-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.primary-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.banner-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.circle-1 {
    width: 200px;
    height: 200px;
    top: -50px;
    right: 10%;
}

.circle-2 {
    width: 150px;
    height: 150px;
    bottom: -30px;
    left: 15%;
}

.circle-3 {
    width: 100px;
    height: 100px;
    top: 50%;
    right: 20%;
}

/* Breadcrumbs */
.breadcrumb-nav {
    background: var(--bg-light);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    flex-wrap: wrap;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.breadcrumb-item a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

.breadcrumb-item.active {
    color: var(--text-light);
    font-weight: 500;
}

.breadcrumb-separator {
    color: var(--text-light);
    margin: 0 0.25rem;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 3rem 0;
}

.page-header {
    background: var(--bg-light);
    padding: 3rem 0;
    text-align: center;
    margin-bottom: 3rem;
}

.page-title {
    font-size: 2.8rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    font-weight: 800;
}

.page-intro {
    font-size: 1.125rem;
    color: var(--text-light);
}

/* Features Block */
.features-block {
    padding: 4rem 0;
}

.section-heading {
    font-size: 2.3rem;
    text-align: center;
    margin-bottom: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    position: relative;
    padding-bottom: 1rem;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-box {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 100%;
    height: 180px;
    margin-bottom: 1.5rem;
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg-light);
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.feature-box:hover .feature-icon img {
    transform: scale(1.05);
}

.feature-box h3 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    font-weight: 700;
    font-size: 1.3rem;
}

.feature-box p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.6;
}

/* Showcase Block */
.showcase-block {
    padding: 4rem 0;
    background: var(--bg-light);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.showcase-item {
    background: var(--bg-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.showcase-item:hover {
    transform: scale(1.02);
}

.showcase-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.showcase-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.showcase-item:hover .showcase-image img {
    transform: scale(1.1);
}

.showcase-info {
    padding: 1.5rem;
}

.showcase-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.showcase-info p {
    color: var(--text-light);
}

/* Intro Content */
.intro-content {
    padding: 3rem 0;
}

.content-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.text-block h2 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    font-size: 2.2rem;
    font-weight: 800;
}

.text-block p {
    color: var(--text-light);
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.image-block img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

/* Journey Steps */
.journey-steps {
    padding: 4rem 0;
    background: var(--bg-light);
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step-card {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.step-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    line-height: 1;
}

.step-body h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.step-body p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.link-btn {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.link-btn:hover {
    color: var(--accent-color);
}

/* Why Section */
.why-section {
    padding: 4rem 0;
}

.why-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.why-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.why-text h2 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    font-size: 2.2rem;
    font-weight: 800;
}

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

.benefits-list li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.benefits-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* Materials Content */
.materials-content {
    padding: 3rem 0;
}

.category-section {
    margin-bottom: 4rem;
}

.category-heading {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary-color);
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.item-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.item-card:hover {
    transform: translateY(-5px);
}

.item-visual {
    width: 100%;
    height: 200px;
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
    background: var(--bg-light);
}

.item-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.item-card:hover .item-visual img {
    transform: scale(1.1);
}

.spec-list {
    list-style: none;
    margin-top: 1rem;
}

.spec-list li {
    padding: 0.25rem 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.tips-section {
    padding: 3rem 0;
    background: var(--bg-light);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.tip-box {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.tip-box h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.tip-box p {
    color: var(--text-light);
}

/* Techniques Content */
.techniques-content {
    padding: 3rem 0;
}

.technique-article {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.technique-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.technique-header h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.level-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.level-beginner {
    background: #d4edda;
    color: #155724;
}

.level-intermediate {
    background: #fff3cd;
    color: #856404;
}

.level-advanced {
    background: #f8d7da;
    color: #721c24;
}

.technique-body {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
}

.technique-image img {
    width: 100%;
    border-radius: 8px;
}

.technique-steps ol {
    margin-left: 1.5rem;
    color: var(--text-light);
}

.technique-steps li {
    margin-bottom: 0.5rem;
}

.technique-note {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-left: 4px solid var(--secondary-color);
    border-radius: 4px;
}

.practice-section {
    padding: 3rem 0;
    background: var(--bg-light);
}

.practice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.practice-item {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.practice-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.practice-item p {
    color: var(--text-light);
}

/* Project Content */
.project-content {
    padding: 3rem 0;
}

.project-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.project-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.project-details h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.project-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.materials-needed {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 3rem;
}

.materials-needed h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.materials-needed ul {
    list-style: none;
    margin-left: 1rem;
}

.materials-needed li {
    padding: 0.5rem 0;
    color: var(--text-light);
    position: relative;
    padding-left: 1.5rem;
}

.materials-needed li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-size: 1.5rem;
}

.instructions-block {
    margin-bottom: 3rem;
}

.instructions-block h2 {
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.instruction-item {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.instruction-item:last-child {
    border-bottom: none;
}

.instruction-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.instruction-number {
    width: 40px;
    height: 40px;
    background: var(--secondary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.instruction-header h3 {
    color: var(--primary-color);
}

.instruction-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.instruction-image {
    margin-top: 1rem;
}

.instruction-image img {
    width: 100%;
    max-width: 500px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.variations-block {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 10px;
}

.variations-block h2 {
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.variations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.variation-card {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.variation-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.variation-card p {
    color: var(--text-light);
}

/* Tips Content */
.tips-content {
    padding: 3rem 0;
}

.tips-category-block {
    margin-bottom: 4rem;
}

.tips-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.tip-entry {
    display: flex;
    gap: 1.5rem;
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.tip-marker {
    width: 8px;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 50%;
    margin-top: 0.5rem;
    flex-shrink: 0;
}

.tip-text h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.tip-text p {
    color: var(--text-light);
}

/* About Content */
.about-content {
    padding: 3rem 0;
}

.about-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
}

.about-block.reverse {
    direction: rtl;
}

.about-block.reverse > * {
    direction: ltr;
}

.about-text h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 2rem;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.features-list {
    list-style: none;
    margin-top: 1rem;
}

.features-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.features-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.values-block {
    margin-bottom: 3rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.value-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
}

.value-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.value-item p {
    color: var(--text-light);
}

.community-block {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 10px;
    text-align: center;
}

.community-block p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* Contact Content */
.contact-content {
    padding: 3rem 0;
}

.contact-layout {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.info-block {
    margin-bottom: 2rem;
}

.info-item {
    margin-bottom: 1.5rem;
}

.info-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.info-item p {
    color: var(--text-light);
}

.social-info {
    margin-top: 2rem;
}

.social-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.social-info p {
    color: var(--text-light);
}

.contact-note {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid var(--secondary-color);
}

.contact-note h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-note p {
    color: var(--text-light);
}

.contact-note a {
    color: var(--secondary-color);
    text-decoration: none;
}

/* Privacy Content */
.privacy-content {
    padding: 3rem 0;
}

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

.privacy-text h2 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
    font-size: 1.8rem;
    font-weight: 800;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.privacy-text p {
    color: var(--text-light);
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.privacy-text ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

.privacy-text ul li {
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

.privacy-text ul li strong {
    color: var(--primary-color);
    font-weight: 600;
}

.contact-form-block {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.contact-form-block h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.form-row {
    margin-bottom: 1.5rem;
}

.form-row label {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-row input,
.form-row textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
}

.form-row input:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.checkbox-row label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-weight: normal;
    cursor: pointer;
}

.checkbox-row input[type="checkbox"] {
    width: auto;
    margin-top: 0.25rem;
}

.submit-button {
    background: var(--secondary-color);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-button:hover {
    background: var(--primary-color);
}

.last-updated {
    margin-top: 2rem;
    font-style: italic;
    color: var(--text-light);
}

/* Footer */
.site-footer {
    background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #3949ab 100%);
    color: white;
    padding: 4rem 0 2rem;
    margin-top: auto;
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.05)"/></svg>');
    opacity: 0.3;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 1;
}

.footer-col h4 {
    margin-bottom: 1.25rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.footer-col p {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-size: 1rem;
}

.footer-col .footer-section-title {
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 1.25rem;
    font-size: 1.3rem;
    text-transform: none;
    letter-spacing: normal;
}

.footer-col ul {
    list-style: none;
    margin-top: 0.5rem;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all 0.3s;
    display: inline-block;
    font-size: 0.95rem;
}

.footer-col a:hover {
    color: #ffffff;
    transform: translateX(5px);
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .banner-title {
        font-size: 2rem;
    }

    .content-layout,
    .why-content,
    .about-block,
    .project-intro {
        grid-template-columns: 1fr;
    }

    .technique-body {
        grid-template-columns: 1fr;
    }

    .step-card {
        grid-template-columns: 60px 1fr;
    }
}