/* Reset and Base Styles */
:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    min-height: 100vh;
    padding: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1.5;
    overflow-x: hidden; /* Prevent horizontal scroll */
}

/* Specific fix for date inputs on mobile browsers */
input[type="date"] {
    appearance: none;
    -webkit-appearance: none;
    min-height: 45px; /* Better touch target */
}

/* Container */
.container {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    max-width: 640px;
    width: 100%;
    padding: 32px;
    margin: 20px auto;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 24px;
}

.header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.025em;
    margin-bottom: 8px;
}

.step-indicator {
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--border);
    border-radius: 100px;
    margin-bottom: 32px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Form Steps */
.form-step {
    display: none;
}

.form-step.active {
    display: block;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-step h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-main);
}

/* Language Selection */
.lang-selection {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.lang-btn {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: white;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.lang-btn img {
    border-radius: 4px;
    object-fit: cover;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.lang-btn:hover {
    border-color: var(--primary);
    background: #eff6ff;
}

/* Form Groups */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    width: 100%;
    max-width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-main);
    background-color: #fff;
    transition: all 0.2s ease;
    display: block; /* Ensure it behaves as a block element */
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input::placeholder {
    color: #94a3b8;
}

/* Date Row */
.date-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.date-row .form-group {
    min-width: 0; /* Prevents grid items from overflowing */
}

/* Guest Forms */
.guest-item {
    background: #f8fafc;
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    border: 1px solid var(--border);
}

.guest-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
}

.photo-preview {
    margin-top: 12px;
}

.photo-preview img {
    width: 100%;
    max-width: 240px;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.remove-guest-btn {
    padding: 6px 12px;
    background: #fee2e2;
    color: #dc2626;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
}

.remove-guest-btn:hover {
    background: #fecaca;
}

.add-guest-btn {
    width: 100%;
    padding: 12px;
    background: #fff;
    color: var(--primary);
    border: 1px dashed var(--primary);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 24px;
}

.add-guest-btn:hover {
    background: #eff6ff;
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 16px;
    background: #f1f5f9;
    padding: 4px;
    border-radius: 8px;
}

.radio-group label {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.2s ease;
    margin-bottom: 0;
}

.radio-group input[type="radio"] {
    display: none;
}

.radio-group label:has(input:checked) {
    background: white;
    color: var(--primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Navigation Buttons */
.button-row {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

.nav-btn {
    padding: 14px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    flex: 1;
}

.nav-btn.primary {
    background: var(--primary);
    color: white;
    border: none;
}

.nav-btn.primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.nav-btn.secondary {
    background: #fff;
    color: var(--text-main);
    border: 1px solid var(--border);
}

.nav-btn.secondary:hover {
    background: #f8fafc;
}

/* Success Message */
.success-message {
    text-align: center;
}

.success-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.info-box {
    background: #f8fafc;
    padding: 24px;
    border-radius: var(--radius);
    text-align: left;
    margin-top: 24px;
    border: 1px solid var(--border);
}

.info-box h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.info-box p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Mobile Responsiveness */
@media (max-width: 640px) {
    body {
        padding: 0;
        background-color: white;
    }
    
    .container {
        border-radius: 0;
        box-shadow: none;
        padding: 24px 16px;
        margin: 0;
        max-width: 100%;
        min-height: 100vh;
    }
    
    .date-row {
        grid-template-columns: 1fr;
    }
    
    .button-row {
        position: sticky;
        bottom: 0;
        background: white;
        padding: 16px 0;
        margin-top: auto;
        border-top: 1px solid var(--border);
    }
}