/**
 * Video to PNG Converter - Main Stylesheet
 * Website: aiframegrabber.com/video-to-png
 * Version 2.0 - Matching main site design
 */

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

/* ===== CSS Variables ===== */
:root {
    --color-primary: #0BC1FF;
    --color-primary-hover: #09a9de;
    --color-primary-light: rgba(11, 193, 255, 0.1);
    --color-secondary: #1abc9c;
    --color-bg: #19181A;
    --color-bg-light: #222124;
    --color-bg-section: #1f1e20;
    --color-text: #d3f2ec;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #6b6b6b;
    --color-border: #333;
    --color-success: #1abc9c;
    --color-step-1: #0BC1FF;
    --color-step-2: #1abc9c;
    --color-step-3: #f59e0b;
    --color-step-4: #ec4899;
    --font-family: 'Quicksand', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ===== Base Styles ===== */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    padding: 0;
    margin: 0;
    font-weight: 500;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--color-bg);
    padding: 0;
    position: relative;
    min-height: 100vh;
}

/* ===== Typography ===== */
h1 {
    text-align: center;
    color: var(--color-text);
    margin-bottom: 20px;
    font-size: 42px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

h1 span.highlight {
    color: var(--color-primary);
}

h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}

h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

p {
    color: var(--color-text-secondary);
    font-size: 16px;
    line-height: 1.7;
}

/* ===== Header / Navigation ===== */
.site-header {
    background: var(--color-bg);
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    object-fit: contain;
}

.logo-text {
    font-weight: 700;
    font-size: 20px;
    color: var(--color-text);
    text-transform: uppercase;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.header-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    transition: color 0.2s;
    letter-spacing: 0.5px;
}

.header-nav a:hover,
.header-nav a.active {
    color: var(--color-primary);
}

.header-nav .btn-app {
    background: var(--color-primary);
    color: var(--color-bg) !important;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 700;
    transition: all 0.2s;
}

.header-nav .btn-app:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
}

/* ===== Hero Upload Section ===== */
.hero-upload {
    text-align: center;
    padding: 60px 40px;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-section) 100%);
}

.page-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 40px;
    margin-top: 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Buttons ===== */
.btn {
    background-color: var(--color-primary);
    color: var(--color-bg);
    border: none;
    padding: 16px 32px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
    font-weight: 700;
    font-family: var(--font-family);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
    line-height: 1.4;
}

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

.btn:disabled {
    background-color: #444;
    color: #888;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary {
    background: var(--color-primary);
    font-size: 17px;
    padding: 18px 40px;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 14px rgba(11, 193, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(11, 193, 255, 0.4);
    transform: translateY(-2px);
}

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

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

.btn-app-store {
    background: var(--color-primary);
    padding: 15px 30px;
    font-size: 16px;
}

.btn-app-store i {
    font-size: 20px;
}

/* ===== Drop Zone ===== */
#videoInput {
    display: none;
}

.drop-zone {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-xl);
    padding: 50px 40px;
    text-align: center;
    background: var(--color-bg-light);
    transition: all 0.3s ease;
    max-width: 550px;
    margin: 0 auto;
}

.drop-zone:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.drop-zone.drag-over {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    transform: scale(1.02);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.drop-hint {
    color: var(--color-text-muted);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.supported-formats {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-top: 25px !important;
}

.drop-zone-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 193, 255, 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--color-bg);
    z-index: 9999;
}

.drop-zone.drag-over .drop-zone-overlay {
    display: flex;
}

.drop-zone-message {
    text-align: center;
}

.drop-zone-message i {
    font-size: 4rem;
    margin-bottom: 20px;
}

.drop-zone-message h3 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    color: var(--color-bg);
}

/* ===== File Info ===== */
#fileInfo {
    display: none;
    max-width: 550px;
    margin: 0 auto;
    padding: 0 40px;
}

.file-selected {
    display: flex;
    align-items: center;
    background: var(--color-primary-light);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: 15px 20px;
    margin: 20px 0;
}

.file-selected i {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-right: 12px;
}

.file-selected span {
    flex: 1;
    font-weight: 600;
    color: var(--color-text);
}

.clear-btn {
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.clear-btn:hover {
    background-color: rgba(239, 68, 68, 0.2);
}

.file-selected-state .drop-zone {
    display: none;
}

/* ===== Video Container ===== */
#videoContainer {
    display: none;
    flex-direction: column;
    align-items: center;
    padding: 30px 40px;
    background: var(--color-bg-section);
}

#videoPlayer {
    max-width: 700px;
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.extraction-options {
    margin: 25px 0;
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.option-group label {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 14px;
}

.option-group select {
    padding: 10px 15px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-family);
    background: var(--color-bg-light);
    color: var(--color-text);
    cursor: pointer;
    transition: border-color 0.2s;
}

.option-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

#extractButton {
    margin-top: 10px;
}

/* ===== Frame Container ===== */
#frameContainer {
    display: none;
    text-align: center;
    padding: 50px 40px;
    background: var(--color-bg);
}

#frameContainer h2 {
    text-align: center;
    margin-bottom: 10px;
}

#frameContainer p {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: 30px;
}

/* ===== Slick Carousel ===== */
.slider-for, .slider-nav {
    margin-top: 20px;
}

.slider-for .slick-slide {
    display: flex !important;
    justify-content: center;
    align-items: center;
}

.slider-for .frame-wrapper {
    position: relative;
    display: inline-block;
}

.slider-for img {
    max-height: 500px;
    max-width: 100%;
    width: auto;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.slider-nav img {
    max-height: 180px;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.slider-nav .slick-current {
    opacity: 1;
}

/* ===== Slick Arrows ===== */
.slick-prev, .slick-next {
    font-size: 0;
    line-height: 0;
    position: absolute;
    top: 50%;
    display: block;
    width: 20px;
    height: 20px;
    padding: 0;
    transform: translate(0, -50%);
    cursor: pointer;
    color: transparent;
    border: none;
    outline: none;
    background: transparent;
    z-index: 1;
}

.slider-for .slick-prev,
.slider-for .slick-next {
    width: 50px;
    height: 50px;
    background: var(--color-bg-light);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.slider-for .slick-prev:hover,
.slider-for .slick-next:hover {
    background: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translate(0, -50%) scale(1.1);
}

.slider-for .slick-prev:hover:before,
.slider-for .slick-next:hover:before {
    color: var(--color-bg);
}

.slider-for .slick-prev {
    left: 30px;
}

.slider-for .slick-next {
    right: 30px;
}

.slick-prev:before, .slick-next:before {
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 20px;
    line-height: 1;
    color: var(--color-primary);
    transition: color 0.2s;
}

.slick-prev:before {
    content: '\f104';
}

.slick-next:before {
    content: '\f105';
}

/* ===== Frame Checkbox ===== */
.frame-checkbox {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 1;
    width: 30px;
    height: 30px;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--color-bg-light);
    border: 3px solid var(--color-primary);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    transition: all 0.2s ease;
}

.frame-checkbox:hover {
    background-color: var(--color-primary-light);
    transform: scale(1.1);
}

.frame-checkbox:checked {
    background-color: var(--color-primary);
}

.frame-checkbox:checked::after {
    content: '\2713';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-bg);
    font-size: 18px;
    font-weight: bold;
}

/* ===== Thumbnail Slider ===== */
.slider-nav .slick-slide {
    position: relative;
    margin: 0 6px;
    opacity: 0.5;
    transition: opacity 0.3s;
    display: flex !important;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: var(--radius-sm);
}

.slider-nav .slick-slide:hover {
    opacity: 0.8;
}

.slider-nav .slick-current {
    opacity: 1;
}

.thumbnail-checkmark {
    position: absolute;
    top: 8px;
    right: 8px;
    background-color: var(--color-primary);
    color: var(--color-bg);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    box-shadow: var(--shadow-sm);
}

.slider-nav .slick-slide.frame-selected .thumbnail-checkmark {
    opacity: 1;
}

/* ===== Download Container ===== */
#downloadContainer {
    display: none;
    text-align: center;
    padding: 30px 40px 50px;
    background: var(--color-bg);
}

#downloadButton {
    margin: 0 10px;
    position: relative;
}

#downloadButton.loading {
    pointer-events: none;
    opacity: 0.7;
}

#downloadButton.loading .btn-text {
    visibility: hidden;
}

.btn-spinner {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 22px;
    height: 22px;
    border: 3px solid rgba(25, 24, 26, 0.3);
    border-top-color: var(--color-bg);
    border-radius: 50%;
    animation: spinner-rotate 0.8s linear infinite;
}

.loading .btn-spinner {
    display: block;
}

@keyframes spinner-rotate {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ===== CTA Section ===== */
.cta-section {
    text-align: center;
    padding: 60px 40px;
    background: linear-gradient(180deg, var(--color-bg-section) 0%, var(--color-bg) 100%);
}

.cta-section h2 {
    margin-bottom: 15px;
}

.cta-section p {
    margin-bottom: 30px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Content Sections ===== */
.content-section {
    padding: 60px 50px;
    text-align: left;
}

.content-section:nth-child(odd) {
    background: var(--color-bg-section);
}

.content-section:nth-child(even) {
    background: var(--color-bg);
}

.content-section h2 {
    text-align: center;
    margin-bottom: 50px;
}

/* ===== How It Works - Steps Grid ===== */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.step-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.step-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(11, 193, 255, 0.1);
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: var(--color-bg);
    margin: 0 auto 20px;
    background: var(--color-primary);
}

.step-card:nth-child(1) .step-number { background: var(--color-step-1); }
.step-card:nth-child(2) .step-number { background: var(--color-step-2); }
.step-card:nth-child(3) .step-number { background: var(--color-step-3); }
.step-card:nth-child(4) .step-number { background: var(--color-step-4); }

.step-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin: 0;
}

/* ===== Features Grid ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    text-align: center;
    padding: 30px;
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--color-primary);
    font-size: 24px;
}

.feature-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin: 0;
}

/* ===== Use Cases Grid ===== */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    max-width: 1000px;
    margin: 0 auto;
}

.use-case-card {
    text-align: center;
    padding: 25px 20px;
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
}

.use-case-icon {
    width: 50px;
    height: 50px;
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: var(--color-primary);
    font-size: 22px;
}

.use-case-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
}

.use-case-card p {
    font-size: 13px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    margin: 0;
}

/* ===== FAQ Section ===== */
.faq-section {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    background: var(--color-bg-light);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: var(--color-bg-light);
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-family);
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    transition: all 0.2s ease;
}

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

.faq-question .faq-icon {
    font-size: 14px;
    color: var(--color-primary);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 24px 24px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    background: var(--color-bg-section);
}

/* ===== SEO Content Section ===== */
.seo-content {
    background: var(--color-bg) !important;
}

.seo-text {
    max-width: 800px;
    margin: 0 auto;
}

.seo-text h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--color-text);
}

.seo-text p {
    margin-bottom: 15px;
}

.seo-text ul {
    margin: 15px 0;
    padding-left: 25px;
    color: var(--color-text-secondary);
}

.seo-text ul li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--color-bg-section);
    padding: 40px 50px;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.footer-logo img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.footer-logo span {
    font-weight: 700;
    font-size: 16px;
    color: var(--color-text);
    text-transform: uppercase;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    color: var(--color-text-secondary);
    font-size: 20px;
    transition: color 0.2s;
}

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

.footer-links {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 13px;
}

.footer-copyright a {
    color: var(--color-text-secondary);
    text-decoration: none;
}

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

.footer-heart {
    color: #ef4444;
}

/* ===== Loading Spinner ===== */
#loadingSpinner {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(25, 24, 26, 0.9);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
}

.spinner {
    border: 4px solid var(--color-border);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

@media (max-width: 768px) {
    body {
        padding: 0;
    }

    .site-header {
        padding: 15px 20px;
    }

    .header-nav {
        gap: 15px;
    }

    .header-nav a {
        font-size: 12px;
    }

    .header-nav .btn-app {
        padding: 8px 15px;
        font-size: 12px;
    }

    h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 24px;
    }

    .hero-upload {
        padding: 40px 20px;
    }

    .page-subtitle {
        font-size: 16px;
    }

    .drop-zone {
        padding: 40px 20px;
    }

    #fileInfo {
        padding: 0 20px;
    }

    #videoContainer {
        padding: 20px;
    }

    .extraction-options {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        margin-bottom: 10px;
    }

    .content-section {
        padding: 40px 20px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .site-footer {
        padding: 30px 20px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-left {
        align-items: center;
    }

    .footer-links {
        justify-content: center;
    }
}

/* ===== Mobile Menu ===== */
@media (max-width: 600px) {
    .header-nav a:not(.btn-app) {
        display: none;
    }

    .logo-text {
        font-size: 16px;
    }
}