/* ========================================
   Easy Generator - 공통 스타일시트
   ======================================== */

/* ========================================
   1. CSS Variables (루트)
   ======================================== */
:root {
    --color-primary: #3498db;
    --color-success: #2ecc71;
    --color-warning: #f39c12;
    --color-danger: #e74c3c;
    --color-dark: #2c3e50;
    --color-light: #ecf0f1;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);

    --border-radius: 10px;
    --transition: all 0.3s ease;
}

/* ========================================
   2. 전역 스타일
   ======================================== */
* {
    font-family: 'Noto Sans KR', sans-serif;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #e3f2fd 0%, #ffffff 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    color: var(--color-dark);
}

/* 텍스트 선택 색상 */
::selection {
    background-color: var(--color-primary);
    color: white;
}

::-moz-selection {
    background-color: var(--color-primary);
    color: white;
}

/* ========================================
   3. 스크롤바 스타일
   ======================================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-light);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

/* ========================================
   4. 페이지 헤더
   ======================================== */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
}

.page-header .btn-outline-light {
    border: 2px solid white;
    color: white;
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s;
    text-decoration: none;
}

.page-header .btn-outline-light:hover {
    background: white;
    color: #667eea;
    text-decoration: none;
}

/* ========================================
   5. 광고 영역
   ======================================== */
.ad-container {
    background: #f5f5f5;
    border: 2px dashed #ddd;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 2rem 0;
    text-align: center;
    color: #999;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
}

.ad-container::before {
    content: "📢 ";
    font-size: 1.2rem;
}

/* ========================================
   6. 페이지 푸터
   ======================================== */
.page-footer {
    background: #f8f9fa;
    padding: 2rem 0;
    text-align: center;
    color: #666;
    margin-top: 3rem;
    border-top: 1px solid #e0e0e0;
}

.page-footer a {
    color: #666;
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

.page-footer a:hover {
    color: #1976d2;
    text-decoration: underline;
}

/* ========================================
   7. 카드 스타일
   ======================================== */
.card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.card-header {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-dark);
}

/* ========================================
   8. 버튼 스타일
   ======================================== */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.btn:active {
    animation: bounce 0.3s ease;
}

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

.btn-primary:hover {
    background: #2980b9;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background: #27ae60;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.btn-warning:hover {
    background: #e67e22;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.btn-danger:hover {
    background: #c0392b;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-info {
    background: #17a2b8;
    color: white;
}

.btn-info:hover {
    background: #138496;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* ========================================
   9. 입력 필드 스타일
   ======================================== */
input[type="text"],
input[type="number"],
input[type="email"],
textarea,
select {
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 1rem;
    transition: var(--transition);
    width: 100%;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

input[type="text"]:hover,
input[type="number"]:hover,
input[type="email"]:hover,
textarea:hover,
select:hover {
    border-color: #bbb;
}

/* ========================================
   10. 로또 번호 스타일
   ======================================== */
.lotto-number {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: white;
    box-shadow: var(--shadow-sm);
    margin: 0.25rem;
    transition: var(--transition);
}

.lotto-number:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

/* 로또 번호 색상 (1-45) */
.lotto-yellow {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
}

.lotto-blue {
    background: linear-gradient(135deg, #4dabf7, #74c0fc);
}

.lotto-red {
    background: linear-gradient(135deg, #ff6b6b, #fa5252);
}

.lotto-gray {
    background: linear-gradient(135deg, #868e96, #adb5bd);
}

.lotto-green {
    background: linear-gradient(135deg, #51cf66, #69db7c);
}

/* ========================================
   11. 바코드 미리보기
   ======================================== */
#barcode-preview {
    display: block;
    margin: 0 auto;
    min-height: 150px;
}

.barcode-container {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================
   12. 링크 스타일
   ======================================== */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: #2980b9;
    text-decoration: underline;
}

/* ========================================
   13. 애니메이션
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(0.95);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* 애니메이션 클래스 */
.fade-in {
    animation: fadeIn 0.5s ease-out;
}

.slide-up {
    animation: slideUp 0.5s ease-out;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ========================================
   14. 유틸리티 클래스
   ======================================== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.rounded { border-radius: var(--border-radius); }
.rounded-full { border-radius: 50%; }

/* ========================================
   15. 반응형 레이아웃
   ======================================== */

/* Mobile (< 768px) - 1열 */
@media (max-width: 767px) {
    .page-header {
        padding: 1.5rem 0;
    }

    .page-header h1 {
        font-size: 1.3rem;
    }

    .page-header .btn-outline-light {
        padding: 0.4rem 1rem;
        font-size: 0.9rem;
    }

    .ad-container {
        padding: 1.5rem;
        margin: 1.5rem 0;
        min-height: 70px;
        font-size: 0.85rem;
    }

    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.95rem;
    }

    .card {
        padding: 1rem;
    }

    .lotto-number {
        width: 38px;
        height: 38px;
        font-size: 0.95rem;
    }

    .grid-1-col {
        grid-template-columns: 1fr;
    }
}

/* Tablet (768px - 1024px) - 2열 */
@media (min-width: 768px) and (max-width: 1024px) {
    .grid-2-col {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

/* Desktop (> 1024px) - 2-3열 */
@media (min-width: 1025px) {
    .grid-3-col {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }

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

/* ========================================
   16. 프린트 스타일
   ======================================== */
@media print {
    .ad-container,
    .page-header .btn,
    .btn,
    .no-print {
        display: none !important;
    }

    body {
        background: white;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ========================================
   17. 다크모드 지원 (선택사항)
   ======================================== */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        color: #ecf0f1;
    }

    .card {
        background: #2c3e50;
        color: #ecf0f1;
    }

    input[type="text"],
    input[type="number"],
    input[type="email"],
    textarea,
    select {
        background: #34495e;
        color: #ecf0f1;
        border-color: #4a5f7f;
    }

    .ad-container {
        background: #34495e;
        border-color: #4a5f7f;
        color: #95a5a6;
    }

    .page-footer {
        background: #2c3e50;
        border-top-color: #4a5f7f;
        color: #95a5a6;
    }
}

/* ========================================
   18. 접근성 개선
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* 포커스 표시 개선 */
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   19. 로딩 스피너
   ======================================== */
.spinner {
    border: 3px solid var(--color-light);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* ========================================
   20. 토스트 알림
   ======================================== */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--color-success);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    animation: slideInRight 0.3s ease-out;
}

.toast.error {
    background: var(--color-danger);
}

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

.toast.info {
    background: var(--color-primary);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ========================================
   21. 개인정보 처리방침 페이지
   ======================================== */
.privacy-content {
    background: white;
    border-radius: 10px;
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    line-height: 1.8;
}

.privacy-content h1 {
    color: #1976d2;
    margin-bottom: 1rem;
    font-size: 2rem;
}

.privacy-content h2 {
    color: #333;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 0.5rem;
}

.privacy-content h3 {
    color: #555;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
}

.privacy-content p {
    color: #666;
    margin-bottom: 1rem;
}

.privacy-content ul {
    color: #666;
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.privacy-content a {
    color: #1976d2;
    text-decoration: none;
}

.privacy-content a:hover {
    text-decoration: underline;
}

.last-updated {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    font-style: italic;
}

/* ========================================
   22. 연락처 페이지
   ======================================== */
.contact-content {
    background: white;
    border-radius: 10px;
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.contact-method {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid #1976d2;
}

.contact-method i {
    font-size: 2rem;
    color: #1976d2;
    margin-bottom: 1rem;
    display: block;
}

.contact-method h3 {
    color: #333;
    margin-bottom: 1rem;
}

.contact-method p {
    color: #666;
    margin-bottom: 0.5rem;
}

.contact-method a {
    color: #1976d2;
    text-decoration: none;
    font-weight: 500;
}

.contact-method a:hover {
    text-decoration: underline;
}

.info-box {
    background: #e3f2fd;
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 2rem;
}

.info-box h4 {
    color: #1976d2;
    margin-bottom: 1rem;
}

.info-box ul {
    color: #666;
    margin-bottom: 0;
}

/* 반응형: 개인정보 처리방침 & 연락처 */
@media (max-width: 768px) {
    .privacy-content,
    .contact-content {
        padding: 1.5rem;
    }

    .privacy-content h1 {
        font-size: 1.5rem;
    }

    .privacy-content h2 {
        font-size: 1.3rem;
    }

    .contact-method {
        padding: 1.5rem;
    }
}