* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --primary-color: #1a9bd5;
    --primary-dark: #1580b0;
    --secondary-color: #2c3e50;
    --accent-color: #f5a623;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --background: #f5f7fa;
    --card-background: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e1e8ed;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

html {
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

/* Pages */
.page {
    display: none;
    width: 100%;
    max-width: 100%;
}

.page.active {
    display: block;
}

/* Cards */
.card {
    background: var(--card-background);
    border-radius: 16px;
    padding: 24px 20px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    text-align: center;
}

/* Logo */
.header-logo {
    text-align: center;
    margin-bottom: 16px;
}

.logo-full {
    max-width: 200px;
    height: auto;
}

/* Typography */
h1, h2 {
    font-family: 'Playfair Display', serif;
    color: var(--secondary-color);
}

h2 {
    font-size: 1.25rem;
}

.welcome-text {
    color: var(--primary-color);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 8px;
}

.divider {
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    margin: 12px auto;
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    min-height: 48px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-tripadvisor {
    background: #00af87;
    color: white;
    text-decoration: none;
    margin-top: 20px;
}

/* Language Selector */
.language-selector {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.language-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 18px;
    background: var(--card-background);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 90px;
}

.language-btn:active {
    transform: scale(0.95);
    border-color: var(--primary-color);
}

.language-btn .flag {
    font-size: 2rem;
}

.language-btn span {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Star Rating */
.rating-card {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.star-rating {
    display: flex;
    justify-content: center;
    gap: 4px;
    padding: 20px 0;
}

.star {
    font-size: 2.5rem;
    cursor: pointer;
    transition: all 0.15s ease;
    color: var(--border-color);
    padding: 8px;
}

.star:active {
    transform: scale(1.2);
}

.star.active,
.star.hover {
    color: var(--accent-color);
}

.star-small {
    font-size: 1.25rem;
    color: var(--border-color);
}

.star-small.active {
    color: var(--accent-color);
}

/* Form */
.form-group {
    margin-bottom: 16px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

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

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

/* Back Button */
.back-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    padding: 12px 0;
    margin-bottom: 12px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* Feedback Header */
.feedback-header {
    margin-bottom: 20px;
}

.rating-display {
    margin-bottom: 12px;
}

/* Thank You */
.thank-you {
    text-align: center;
}

.thank-you .icon {
    font-size: 3.5rem;
    margin-bottom: 16px;
    color: var(--success-color);
}

.tripadvisor-icon {
    color: #00af87;
}

.countdown-container {
    margin-top: 20px;
    color: var(--text-secondary);
}

.countdown {
    font-size: 2rem;
    font-weight: bold;
    color: #00af87;
    margin-top: 8px;
}

/* Back to Home Bar */
.back-home-bar {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
}

.btn-back-home {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    padding: 12px 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    font-family: inherit;
}

.btn-back-home:active {
    transform: scale(0.98);
}

/* Responsive - Tablet */
@media (min-width: 768px) {
    .card {
        padding: 32px;
        border-radius: 20px;
    }

    .logo-full {
        max-width: 240px;
    }

    .star {
        font-size: 3rem;
    }

    .language-btn {
        padding: 16px 24px;
        min-width: 100px;
    }
}

/* Responsive - Desktop */
@media (min-width: 1024px) {
    .logo-full {
        max-width: 280px;
    }

    .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(26, 155, 213, 0.4);
    }

    .star:hover {
        transform: scale(1.15);
        color: var(--accent-color);
    }

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

    .btn-back-home:hover {
        border-color: var(--primary-color);
        color: var(--primary-color);
    }
}