/* css/style.css */
:root {
    /* Light mode colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --input-bg: #ffffff;
    --button-bg: #007bff;
    --button-text: #ffffff;
    --button-danger: #dc3545;
    --button-success: #28a745;
    --card-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --hover-bg: #e9ecef;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --text-primary: #f8f9fa;
        --text-secondary: #adb5bd;
        --border-color: #404040;
        --input-bg: #333333;
        --button-bg: #0056b3;
        --button-text: #ffffff;
        --button-danger: #c82333;
        --button-success: #1e7e34;
        --card-shadow: 0 2px 4px rgba(0,0,0,0.3);
        --hover-bg: #404040;
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 100%;
    padding: 15px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

/* Header */
.header {
    background-color: var(--bg-primary);
    padding: 15px;
    margin-bottom: 20px;
    box-shadow: var(--card-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 1.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

input, select, textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: 16px;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--button-bg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: opacity 0.3s;
}

.btn:active {
    opacity: 0.7;
}

.btn-primary {
    background-color: var(--button-bg);
    color: var(--button-text);
}

.btn-success {
    background-color: var(--button-success);
    color: var(--button-text);
}

.btn-danger {
    background-color: var(--button-danger);
    color: var(--button-text);
}

.btn-block {
    width: 100%;
}

/* Amount buttons */
.amount-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 8px;
    margin: 10px 0;
}

.amount-btn {
    padding: 12px 8px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.amount-btn.selected {
    background-color: var(--button-bg);
    color: white;
    border-color: var(--button-bg);
}

/* Cards */
.card {
    background-color: var(--bg-primary);
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: var(--card-shadow);
}

.gift-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.gift-item:last-child {
    border-bottom: none;
}

.gift-info h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.gift-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.gift-amount {
    font-weight: bold;
    color: var(--button-success);
}

/* Filter bar */
.filter-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-bar select, .filter-bar input {
    flex: 1;
    min-width: 200px;
}

/* Settings */
.category-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
}

.category-actions {
    display: flex;
    gap: 8px;
}

.category-actions button {
    padding: 6px 12px;
    font-size: 14px;
}

/* Login form */
.login-container {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
}

.error-message {
    background-color: var(--button-danger);
    color: white;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
    text-align: center;
}

/* Navigation */
.nav-menu {
    display: flex;
    gap: 10px;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 6px;
    background-color: var(--bg-secondary);
}

.nav-link.active {
    background-color: var(--button-bg);
    color: white;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
}

.modal-content {
    background-color: var(--bg-primary);
    margin: 20px;
    padding: 20px;
    border-radius: 12px;
    max-width: 500px;
    margin: 50px auto;
}

/* Utilities */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.hidden { display: none; }