:root {
    --primary: #ff70a8;
    --primary-hover: #e65a90;
    --bg: #ffffff;
    --card-bg: #ffffff;
    --text: #212121;
    --text-secondary: #757575;
    --border: #e7e7e7;
    --radius: 7px;
    --error: #ff4757;
    --success: #2ed573;
    --nav-height: 55px;
    --bottom-nav-height: 60px;
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding-bottom: var(--bottom-nav-height);
}

.container {
    width: 100%;
    max-width: 480px;
    padding: 20px;
    padding-top: 20px;
}

h1, h2, h3 {
    color: var(--text);
    font-weight: 600;
    margin: 0 0 15px 0;
}

p {
    margin: 0 0 10px 0;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Global Form Styles */
.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 16px;
    transition: all 0.2s ease;
    outline: none;
    background: #f9f9f9;
    color: var(--text);
}

.form-control:focus {
    border-color: var(--primary);
    background: #fff;
}

.btn {
    display: block;
    width: 100%;
    padding: 12px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    text-decoration: none;
}

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

.btn:disabled {
    background-color: #f0f0f0;
    color: #ccc;
    cursor: not-allowed;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: var(--bottom-nav-height);
    background: #fff;
    border-top: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 10px;
    flex: 1;
    height: 100%;
    justify-content: center;
}

.nav-item.active {
    color: var(--primary);
}

.nav-icon {
    width: 24px;
    height: 24px;
    margin-bottom: 2px;
}

/* Download List */
.download-card {
    background: #f9f9f9;
    border-radius: var(--radius);
    padding: 15px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.platform-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.platform-icon {
    width: 32px;
    height: 32px;
}

.platform-name {
    font-weight: 600;
    color: var(--text);
}

.platform-status {
    font-size: 12px;
    color: var(--text-secondary);
}

/* About Page */
.about-header {
    text-align: center;
    padding: 30px 0;
}

.app-icon {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    margin-bottom: 15px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.section-title {
    font-size: 16px;
    font-weight: 600;
    margin-top: 25px;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-logo {
    height: 24px;
    object-fit: contain;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
}

.info-label {
    color: var(--text-secondary);
}

.info-value {
    color: var(--text);
    font-weight: 500;
}

.legal-text {
    font-size: 13px;
    color: var(--text-secondary);
    background: #f9f9f9;
    padding: 12px;
    border-radius: var(--radius);
    margin-top: 10px;
}