/* Mobil-First CSS - Kırmızı Tonlar */

/* Reset ve Temel Ayarlar */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-red: #dc2626;
    --secondary-red: #ef4444;
    --light-red: #fecaca;
    --dark-red: #991b1b;
    --white: #ffffff;
    --black: #000000;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--light-red) 0%, var(--white) 100%);
    min-height: 100vh;
    color: var(--gray-900);
    padding-bottom: 80px; /* Alt navigation için boşluk */
}

/* Container */
.container {
    max-width: 100%;
    padding: 0 16px;
    margin: 0 auto;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-red), var(--secondary-red));
    color: var(--white);
    padding: 16px 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header h1 {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin: 0;
}

.header .user-info {
    text-align: center;
    margin-top: 8px;
    font-size: 14px;
    opacity: 0.9;
}

/* Messages */
.messages {
    position: fixed;
    top: 80px;
    left: 16px;
    right: 16px;
    z-index: 1000;
}

.message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 8px;
    font-weight: 500;
    box-shadow: var(--shadow);
}

.message.success {
    background-color: var(--success);
    color: var(--white);
}

.message.error {
    background-color: var(--error);
    color: var(--white);
}

.message.warning {
    background-color: var(--warning);
    color: var(--white);
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 16px;
    padding: 20px;
    margin: 16px 0;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.card-header {
    margin-bottom: 16px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-red);
    margin-bottom: 8px;
}

.card-subtitle {
    font-size: 14px;
    color: var(--gray-500);
}

/* Barkod Kartı */
.barcode-card {
    background: linear-gradient(135deg, var(--white), var(--light-red));
    border: 2px solid var(--primary-red);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.barcode-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.barcode-display {
    background: var(--white);
    border: 2px dashed var(--primary-red);
    border-radius: 12px;
    padding: 20px;
    margin: 16px 0;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Code128 SVG barkod stilleri */
.barcode-display svg {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    background: white;
}

/* Eski barkod çizgisi stilleri (geriye uyumluluk için) */
.barcode-stripes {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 60px;
    margin: 10px 0;
    padding: 0 20px;
}

.barcode-line {
    height: 100%;
    margin: 0 0.5px;
    background-color: var(--black);
}

.barcode-code {
    font-family: 'Courier New', monospace;
    font-size: 18px;
    font-weight: bold;
    color: var(--primary-red);
    letter-spacing: 2px;
    margin-top: 12px;
}

.campaign-info {
    margin-top: 16px;
    padding: 12px;
    background: var(--light-red);
    border-radius: 8px;
}

.campaign-name {
    font-weight: 600;
    color: var(--dark-red);
    margin-bottom: 4px;
}

.campaign-desc {
    font-size: 14px;
    color: var(--gray-700);
}

/* Forms */
.form {
    width: 100%;
}

.child-input {
    margin-bottom: 16px;
    padding: 16px;
    background: var(--light-red);
    border-radius: 8px;
    border: 1px solid var(--gray-300);
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--gray-700);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    font-size: 16px;
    background: var(--white);
    cursor: pointer;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 16px 0;
}

.form-checkbox input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-red);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-red), var(--secondary-red));
    color: var(--white);
    box-shadow: var(--shadow);
}

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

.btn-secondary {
    background: var(--white);
    color: var(--primary-red);
    border: 2px solid var(--primary-red);
}

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

.btn-full {
    width: 100%;
    margin: 8px 0;
}

/* Grid Layout */
.grid {
    display: grid;
    gap: 16px;
    margin: 16px 0;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Product Cards */
.product-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-4px);
}

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--gray-200);
}

.product-content {
    padding: 16px;
}

.product-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
    line-height: 1.4;
}

.product-price {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-red);
    margin-bottom: 8px;
}

.product-description {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.4;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

.nav-items {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 12px 0;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--gray-500);
    font-size: 12px;
    font-weight: 500;
    transition: color 0.3s ease;
    min-width: 60px;
}

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

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

.nav-icon {
    font-size: 24px;
    margin-bottom: 4px;
}

/* Loading States */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (min-width: 768px) {
    .container {
        max-width: 768px;
        padding: 0 24px;
    }
    
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.p-1 { padding: 8px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }

.hidden { display: none; }
.block { display: block; }

/* Animation */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}