@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #1a1a1a;
    line-height: 1.6;
    min-height: 100vh;
}
header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 16px 32px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}
.logo {
    width: 48px;
    height: auto;
    filter: drop-shadow(0 2px 4px rgba(42, 122, 226, 0.15));
}

h1 {
    margin: 0;
    font-size: 1.8em;
    font-weight: 700;
    background: linear-gradient(135deg, #2a7ae2 0%, #5ba0f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

header p {
    display: none;
}

.header-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.header-badge {
    height: 40px;
    border-radius: 6px;
    transition: transform 0.2s ease;
}

.header-badge:hover {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .header-badge {
        height: 35px;
    }
    
    .header-badges {
        gap: 8px;
    }
}
main {
    max-width: 720px;
    margin: 20px auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08), 0 8px 20px rgba(0, 0, 0, 0.04);
    padding: 48px 40px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}
h2 {
    color: #1e293b;
    font-size: 1.8em;
    font-weight: 600;
    margin: 0 0 20px 0;
    position: relative;
    padding-bottom: 12px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #2a7ae2 0%, #5ba0f7 100%);
    border-radius: 2px;
}

section {
    margin-bottom: 40px;
}

p {
    color: #475569;
    font-size: 1.1em;
    font-weight: 400;
    margin: 16px 0;
}

ul {
    padding-left: 20px;
    color: #475569;
}

li {
    margin-bottom: 12px;
    font-size: 1.05em;
}

.screenshots {
    display: flex;
    gap: 18px;
    justify-content: center;
    margin: 24px 0 12px 0;
}
.screenshot {
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(42,122,226,0.08);
    width: 30%;
    min-width: 120px;
    max-width: 160px;
    height: auto;
    object-fit: cover;
    border: 1px solid #e3eaf3;
    background: #f8f9fa;
}
.donate-btn {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b6b 0%, #ffa726 100%);
    color: #fff;
    font-weight: 600;
    font-size: 1.1em;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(255, 107, 107, 0.3);
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.donate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(255, 107, 107, 0.4);
    background: linear-gradient(135deg, #ff5252 0%, #ff9800 100%);
    color: #fff;
}
/* Carousel */
.carousel {
    position: relative;
    max-width: 360px;
    margin: 0 auto;
}

/* Maintenance Popup */
.maintenance-popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.maintenance-content {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 24px;
    padding: 40px 32px;
    max-width: 560px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    animation: slideUp 0.4s ease;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.maintenance-icon {
    font-size: 64px;
    margin-bottom: 20px;
    animation: rotate 2s ease-in-out infinite;
}

@keyframes rotate {
    0%, 100% { transform: rotate(-10deg); }
    50% { transform: rotate(10deg); }
}

.maintenance-content h2 {
    color: #1e293b;
    font-size: 2em;
    margin-bottom: 16px;
    font-weight: 700;
}

.maintenance-content p {
    color: #475569;
    font-size: 1.05em;
    line-height: 1.6;
    margin: 12px 0;
}

.maintenance-content ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.maintenance-content ul li {
    color: #334155;
    font-size: 1em;
    padding: 8px 0;
    line-height: 1.5;
}

.close-popup-btn {
    margin-top: 24px;
    padding: 14px 32px;
    background: linear-gradient(135deg, #2a7ae2 0%, #1e5bb8 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.05em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(42, 122, 226, 0.3);
}

.close-popup-btn:hover {
    background: linear-gradient(135deg, #1e5bb8 0%, #164a99 100%);
    box-shadow: 0 6px 16px rgba(42, 122, 226, 0.4);
    transform: translateY(-2px);
}

.close-popup-btn:active {
    transform: translateY(0);
}

/* Carousel */
.carousel {
    position: relative;
    max-width: 360px;
    margin: 0 auto;
}

.carousel-controls {
    display: flex;
    gap: 20px;
    align-items: center;
}

.carousel-img {
    width: 360px;
    max-width: 85vw;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 12px 40px rgba(42, 122, 226, 0.15), 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.8);
    background: #fff;
    transition: all 0.3s ease;
}

.carousel-img:hover {
    transform: scale(1.02);
    box-shadow: 0 16px 50px rgba(42, 122, 226, 0.2), 0 6px 16px rgba(0, 0, 0, 0.15);
}

.carousel-btn {
    background: linear-gradient(135deg, #2a7ae2 0%, #5ba0f7 100%);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 52px;
    height: 52px;
    font-size: 1.8em;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(42, 122, 226, 0.25);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(42, 122, 226, 0.35);
    background: linear-gradient(135deg, #1959a6 0%, #4285f4 100%);
}

@media (max-width: 768px) {
    .carousel-btn {
        width: 48px;
        height: 48px;
        font-size: 1.6em;
    }
    
    .carousel-controls {
        gap: 16px;
    }
    
    .carousel-img {
        width: 280px;
        max-width: 80vw;
    }
}
h2 {
    color: #2a7ae2;
    font-size: 1.4em;
    margin-top: 0;
}
ul {
    padding-left: 20px;
}
li {
    margin-bottom: 8px;
}
footer {
    text-align: center;
    padding: 32px 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    color: #64748b;
    font-size: 0.95em;
    margin-top: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.05);
}

.tutorial-section {
    margin-top: 24px;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
}

.tutorial-header {
    background: #f8fafc;
    padding: 16px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    color: #475569;
    transition: background 0.2s;
}

.tutorial-header:hover {
    background: #f1f5f9;
}

.arrow {
    font-size: 0.9em;
    transition: transform 0.2s;
}

.tutorial-content {
    display: none;
    padding: 24px;
    background: #fff;
}

.warning {
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    color: #dc2626;
    font-size: 0.95em;
}

.tutorial-content ol {
    padding-left: 20px;
}

.tutorial-content ol li {
    margin-bottom: 8px;
    color: #475569;
}

.faq-item {
    margin-bottom: 24px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 12px;
    border-left: 4px solid #2a7ae2;
}

.faq-item h3 {
    margin: 0 0 12px 0;
    color: #1e293b;
    font-size: 1.2em;
    font-weight: 600;
}

.faq-item p {
    margin: 0;
    color: #475569;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.info-item {
    padding: 16px;
    background: #f1f5f9;
    border-radius: 8px;
    text-align: center;
}

.info-item h4 {
    margin: 0 0 8px 0;
    color: #2a7ae2;
    font-size: 1.1em;
}

.info-item p {
    margin: 0;
    color: #64748b;
    font-size: 0.95em;
}

.contact-info {
    background: #f0f9ff;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #bae6fd;
    margin: 16px 0;
}

.contact-info p {
    margin: 8px 0;
}

.contact-form {
    background: #f8fafc;
    padding: 32px;
    border-radius: 16px;
    margin: 24px 0;
    border: 1px solid #e2e8f0;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #1e293b;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1em;
    font-family: inherit;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2a7ae2;
    box-shadow: 0 0 0 3px rgba(42, 122, 226, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    background: linear-gradient(135deg, #2a7ae2 0%, #5ba0f7 100%);
    color: #fff;
    font-weight: 600;
    font-size: 1.1em;
    padding: 16px 32px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(42, 122, 226, 0.25);
    transition: all 0.3s ease;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(42, 122, 226, 0.35);
    background: linear-gradient(135deg, #1959a6 0%, #4285f4 100%);
}

.form-note {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    padding: 16px;
    border-radius: 8px;
    margin-top: 16px;
}

.form-note p {
    margin: 0;
    color: #856404;
    font-size: 0.95em;
}

.contact-method {
    background: #fff;
    padding: 24px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.contact-method h3 {
    margin: 0 0 12px 0;
    color: #2a7ae2;
    font-size: 1.3em;
}

.contact-method p {
    margin: 8px 0;
    color: #1e293b;
}

.contact-detail {
    color: #64748b !important;
    font-size: 0.9em !important;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.tip-item {
    background: #f1f5f9;
    padding: 20px;
    border-radius: 12px;
    border-left: 4px solid #2a7ae2;
}

.tip-item h4 {
    margin: 0 0 12px 0;
    color: #1e293b;
    font-size: 1.1em;
}

.tip-item ul {
    margin: 0;
    padding-left: 20px;
}

.tip-item li {
    color: #475569;
    margin-bottom: 6px;
    font-size: 0.95em;
}

.testflight-link {
    display: inline-block;
    background: linear-gradient(135deg, #007AFF 0%, #5AC8FA 100%);
    color: #fff;
    font-weight: 600;
    font-size: 1.1em;
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
    transition: all 0.3s ease;
    margin: 8px 0;
}

.testflight-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 122, 255, 0.4);
    background: linear-gradient(135deg, #0056CC 0%, #32ADE6 100%);
    color: #fff;
}

.playstore-btn {
    display: inline-block;
    background: linear-gradient(135deg, #34a853 0%, #4caf50 100%);
    color: #fff;
    font-weight: 600;
    font-size: 1.1em;
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(52, 168, 83, 0.3);
    transition: all 0.3s ease;
    margin: 8px 0;
}

.playstore-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(52, 168, 83, 0.4);
    background: linear-gradient(135deg, #2e7d32 0%, #388e3c 100%);
    color: #fff;
}