/* =====================================================
   QReative.link - Main Stylesheet
   ===================================================== */

/* ==================== Base Styles ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #00d9ff;
    --primary-dark: #00b8d4;
    --secondary: #00ff88;
    --dark: #0a0a0a;
    --dark-light: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border: rgba(255, 255, 255, 0.1);
    --success: #00ff88;
    --warning: #ffd700;
    --error: #ef4444;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
    min-height: 100vh;
    color: #e4e4e4;
    position: relative;
    overflow-x: hidden;
}

/* ==================== Animations ==================== */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.3;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 0, 128, 0.05) 0%, transparent 50%);
    animation: bgMove 20s ease-in-out infinite;
}

@keyframes bgMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-20px, -20px) rotate(1deg); }
    66% { transform: translate(20px, -10px) rotate(-1deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes floatButton {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==================== Header & Navigation ==================== */
.header {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: all 0.3s;
}

.logo-img {
    height: 70px;
    width: auto;
    display: block;
}

.logo:hover {
    transform: translateX(-4px);
}

.logo:hover .logo-img {
    transform: scale(1.05);
    transition: transform 0.3s ease;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 24px;
    color: white;
    box-shadow: 0 4px 12px rgba(0, 217, 255, 0.3);
}

.logo-text {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.cta-button {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--dark);
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0, 217, 255, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.5);
}

/* ==================== Hero Section ==================== */
.hero {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 24px 48px;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
    animation: pulse 2s ease-in-out infinite;
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary) 50%, var(--secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient 3s ease-in-out infinite;
    background-size: 200% 200%;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto 48px;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.hero-feature-icon {
    color: var(--success);
    font-size: 18px;
}

.trust-badges {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    margin-top: 48px;
    padding: 32px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.trust-badge {
    text-align: center;
}

.trust-number {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.trust-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ==================== Main Content ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 48px 24px;
}

.grid {
    display: grid;
    gap: 32px;
}

@media (min-width: 1024px) {
    .grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* ==================== Panels ==================== */
.panel {
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 32px;
    border: 1px solid var(--border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    transition: all 0.3s;
}

.panel:hover {
    border-color: rgba(0, 217, 255, 0.2);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6);
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 2px solid rgba(0, 217, 255, 0.2);
}

.panel-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(0, 255, 136, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.panel-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ==================== QR Generator Specific ==================== */
.content-type-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

@media (max-width: 768px) {
    .content-type-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.content-type-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px 12px;
    background: rgba(30, 30, 30, 0.5);
    border: 2px solid rgba(0, 217, 255, 0.2);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.content-type-btn:hover {
    background: rgba(30, 30, 30, 0.8);
    border-color: rgba(0, 217, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 217, 255, 0.2);
}

.content-type-btn.active {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.3), rgba(0, 255, 136, 0.3));
    border-color: var(--primary);
    color: var(--primary);
}

.content-type-icon {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.upload-zone {
    border: 2px dashed rgba(0, 217, 255, 0.3);
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    background: rgba(30, 30, 30, 0.3);
    cursor: pointer;
    transition: all 0.3s;
    display: block;
}

.upload-zone:hover {
    border-color: rgba(0, 217, 255, 0.6);
    background: rgba(30, 30, 30, 0.5);
}

.logo-preview-box {
    position: relative;
    background: rgba(30, 30, 30, 0.5);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
}

.logo-preview-img {
    max-height: 128px;
    max-width: 100%;
    margin: 0 auto;
    border-radius: 8px;
    display: block;
}

.remove-logo-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--error);
    color: white;
    border: none;
    border-radius: 50%;
    padding: 8px;
    cursor: pointer;
    transition: background 0.3s;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-logo-btn:hover {
    background: #dc2626;
}

.color-presets-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-top: 12px;
}

@media (max-width: 480px) {
    .color-presets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.color-preset {
    width: 100%;
    height: 50px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.color-preset:hover {
    transform: scale(1.05);
    border-color: rgba(0, 217, 255, 0.5);
}

.color-preset.active {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
}

.color-preset.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 20px;
    font-weight: bold;
}

.preview-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background: rgba(30, 30, 30, 0.3);
    border-radius: 12px;
    border: 2px dashed rgba(0, 217, 255, 0.3);
    padding: 24px;
}

/* ==================== Form Elements ==================== */
.input, .select, .textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(30, 30, 30, 0.5);
    border: 2px solid rgba(0, 217, 255, 0.2);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.9375rem;
    transition: all 0.3s;
}

.input:focus, .select:focus, .textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
    background: rgba(30, 30, 30, 0.7);
}

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

.label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input[type="range"] {
    width: 100%;
    height: 8px;
    background: rgba(30, 30, 30, 0.5);
    border-radius: 8px;
    outline: none;
    margin-top: 8px;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    cursor: pointer;
    border: none;
}

input[type="color"] {
    width: 100%;
    height: 48px;
    border-radius: 8px;
    border: 2px solid rgba(0, 217, 255, 0.2);
    cursor: pointer;
    background: rgba(30, 30, 30, 0.5);
}

input[type="checkbox"] {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 2px solid rgba(0, 217, 255, 0.3);
    background: rgba(30, 30, 30, 0.5);
    cursor: pointer;
    accent-color: var(--primary);
}

/* ==================== Buttons ==================== */
.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--dark);
    border: none;
    padding: 18px;
    border-radius: 12px;
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.4);
}

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

.btn-secondary {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(30, 30, 30, 0.5);
    border: 1px solid rgba(0, 217, 255, 0.3);
    color: var(--primary);
    padding: 14px 24px;
    border-radius: 12px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: rgba(30, 30, 30, 0.7);
    border-color: var(--primary);
}

/* ==================== Info Boxes ==================== */
.info-box {
    padding: 24px;
    background: rgba(0, 217, 255, 0.05);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 12px;
    margin-top: 24px;
}

.info-box h3 {
    color: var(--primary);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.info-list {
    list-style: none;
    padding: 0;
}

.info-list li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: flex;
    align-items: start;
    gap: 8px;
}

.info-list li::before {
    content: "✓";
    color: var(--success);
    font-weight: bold;
    margin-top: 2px;
}

/* ==================== Features Section ==================== */
.features-section {
    max-width: 1400px;
    margin: 80px auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: rgba(20, 20, 20, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 217, 255, 0.3);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(0, 255, 136, 0.2));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 32px;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==================== Use Cases Section ==================== */
.use-cases-section {
    background: rgba(0, 217, 255, 0.02);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 80px 0;
    margin: 80px 0;
}

.use-cases-grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.use-case {
    text-align: center;
    padding: 24px;
    background: rgba(20, 20, 20, 0.3);
    border-radius: 12px;
    transition: all 0.3s;
}

.use-case:hover {
    background: rgba(20, 20, 20, 0.5);
    transform: translateY(-2px);
}

.use-case-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.use-case-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.use-case-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ==================== FAQ Section ==================== */
.faq-section {
    max-width: 900px;
    margin: 80px auto;
    padding: 0 24px;
}

.faq-item {
    background: rgba(20, 20, 20, 0.4);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-question {
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.3s;
}

.faq-question:hover {
    background: rgba(0, 217, 255, 0.05);
}

.faq-icon {
    transition: transform 0.3s;
}

.faq-item.active .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 20px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==================== Footer ==================== */
.footer {
    background: rgba(10, 10, 10, 0.95);
    border-top: 1px solid var(--border);
    padding: 48px 24px 24px;
    margin-top: 80px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 32px;
}

.footer-section h4 {
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

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

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-brand {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.footer-brand:hover {
    color: var(--secondary);
}

/* ==================== Contact Popup ==================== */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.popup-overlay.active {
    opacity: 1;
    visibility: visible;
}

.popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: linear-gradient(135deg, rgba(20, 20, 20, 0.98) 0%, rgba(30, 30, 30, 0.98) 100%);
    border: 1px solid var(--border);
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
    transition: all 0.3s ease;
}

.popup-overlay.active .popup {
    transform: translate(-50%, -50%) scale(1);
}

.popup-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    color: var(--text-secondary);
}

.popup-close:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.popup-header {
    text-align: center;
    margin-bottom: 32px;
}

.popup-title {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.popup-subtitle {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(30, 30, 30, 0.5);
    border: 2px solid rgba(0, 217, 255, 0.2);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    transition: all 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

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

.form-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--dark);
    border: none;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 24px;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.4);
}

.form-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    position: relative;
}

.form-submit:disabled::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    margin: auto;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ==================== Floating Contact Button ==================== */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.4);
    transition: all 0.3s;
    z-index: 999;
    animation: floatButton 3s ease-in-out infinite;
}

.floating-contact:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(0, 217, 255, 0.6);
}

.floating-contact svg {
    width: 24px;
    height: 24px;
    color: var(--dark);
}

/* ==================== Utility Classes ==================== */
.hidden { display: none; }
.space-y-4 > * + * { margin-top: 16px; }
.space-y-3 > * + * { margin-top: 12px; }
.space-y-6 > * + * { margin-top: 24px; }
.mb-4 { margin-bottom: 16px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

.sticky {
    position: sticky;
    top: 100px;
}

@media (max-width: 1024px) {
    .sticky {
        position: relative;
        top: 0;
    }
}

.icon-sm { width: 20px; height: 20px; }
.icon-md { width: 24px; height: 24px; }
.icon-lg { width: 32px; height: 32px; }

.loading {
    background: linear-gradient(90deg, rgba(0, 217, 255, 0.1) 25%, rgba(0, 217, 255, 0.2) 50%, rgba(0, 217, 255, 0.1) 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* ==================== Mobile Responsive ==================== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero {
        padding: 48px 16px;
    }
    
    .container {
        padding: 24px 16px;
    }
    
    .panel {
        padding: 24px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}