/* 画像条件便 - メインスタイル */

/* リセット・共通設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Hiragino Sans', 'Meiryo', sans-serif;
    background: linear-gradient(135deg, #4a90e2 0%, #357abd 25%, #1e3a5f 75%, #0f1419 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
    padding: 20px 0;
    position: relative;
}

/* ブランドカラー */
:root {
    --primary-color: #4a90e2;
    --primary-dark: #357abd;
    --secondary-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #1e3a5f;
    --gradient-main: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
    --gradient-success: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-border: rgba(255, 255, 255, 0.2);
}

/* ダークモード対応 */
@media (prefers-color-scheme: dark) {
    :root {
        --card-bg: rgba(26, 32, 44, 0.95);
        --card-border: rgba(255, 255, 255, 0.1);
        --light-color: #2d3748;
        --dark-color: #e2e8f0;
    }
    
    body {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 25%, #1a202c 75%, #0f0f23 100%);
        color: #fff;
    }
}

/* コンテナ・レイアウト */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* メインカード */
.main-card {
    background: var(--card-bg);
    backdrop-filter: blur(15px);
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--card-border);
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.main-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
}

/* ヘッダー */
.header {
    text-align: center;
    margin-bottom: 2.5rem;
    position: relative;
}

.header::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-main);
    border-radius: 2px;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.header .subtitle {
    color: #666;
    font-size: 1.1rem;
    font-weight: 400;
}

@media (prefers-color-scheme: dark) {
    .header .subtitle {
        color: #a0aec0;
    }
}

/* ナビゲーション */
.nav-pills {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    padding: 0.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-pills .nav-link {
    border-radius: 25px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    color: #fff;
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-pills .nav-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.nav-pills .nav-link.active {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
}

/* アップロードエリア */
.upload-area {
    border: 3px dashed #6c757d;
    border-radius: 20px;
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(248, 249, 250, 0.8);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(74, 144, 226, 0.1), transparent);
    transform: rotate(-45deg);
    transition: all 0.5s ease;
    opacity: 0;
}

.upload-area:hover::before {
    opacity: 1;
    animation: shimmer 2s ease-in-out infinite;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(74, 144, 226, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(74, 144, 226, 0.3);
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(-45deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(-45deg); }
    100% { transform: translateX(-100%) translateY(-100%) rotate(-45deg); }
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    display: block;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@media (prefers-color-scheme: dark) {
    .upload-area {
        background: rgba(45, 55, 72, 0.8);
        border-color: #6c757d;
    }
    .upload-area:hover,
    .upload-area.dragover {
        background: rgba(74, 144, 226, 0.2);
    }
}

/* プレビューエリア */
.preview-image {
    max-width: 100%;
    max-height: 500px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    transition: all 0.3s ease;
}

.preview-image:hover {
    transform: scale(1.02);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

/* 切り取り関連 */
.crop-container {
    position: relative;
    display: inline-block;
    max-width: 100%;
    max-height: 500px;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.crop-image {
    max-width: 100%;
    max-height: 500px;
    cursor: crosshair;
}

.crop-overlay {
    position: absolute;
    border: 3px solid var(--primary-color);
    background: rgba(74, 144, 226, 0.15);
    cursor: move;
    min-width: 50px;
    min-height: 50px;
    border-radius: 8px;
}

.crop-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px dashed #fff;
    margin: 6px;
    border-radius: 4px;
}

.crop-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border: 3px solid #fff;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.crop-handle.nw { top: -6px; left: -6px; cursor: nw-resize; }
.crop-handle.ne { top: -6px; right: -6px; cursor: ne-resize; }
.crop-handle.sw { bottom: -6px; left: -6px; cursor: sw-resize; }
.crop-handle.se { bottom: -6px; right: -6px; cursor: se-resize; }

/* 条件バナー */
.condition-banner {
    background: var(--gradient-main);
    color: white;
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(74, 144, 226, 0.3);
    position: relative;
    overflow: hidden;
}

.condition-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: shine 3s ease-in-out infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(45deg); }
    100% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
}

/* ボタン */
.btn {
    padding: 0.875rem 2rem;
    border-radius: 25px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    min-height: 50px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transition: all 0.5s ease;
    transform: translate(-50%, -50%);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(74, 144, 226, 0.6);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.6);
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(74, 144, 226, 0.4);
}

.btn-outline-secondary {
    background: transparent;
    color: #6c757d;
    border: 2px solid #6c757d;
}

.btn-outline-secondary:hover {
    background: #6c757d;
    color: white;
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
    min-height: 60px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* フォーム */
.form-control, .form-select {
    padding: 0.875rem 1rem;
    border-radius: 12px;
    border: 2px solid #e9ecef;
    background: #fff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
    outline: none;
}

@media (prefers-color-scheme: dark) {
    .form-control, .form-select {
        background-color: #343a40;
        border-color: #6c757d;
        color: #fff;
    }
    .form-control:focus, .form-select:focus {
        background-color: #495057;
        border-color: var(--primary-color);
        color: #fff;
    }
}

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-check-input {
    margin-top: 0.25rem;
    width: 1.25rem;
    height: 1.25rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-label {
    font-weight: 500;
    padding-left: 0.5rem;
}

/* URL表示エリア */
.url-display {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(53, 122, 189, 0.1) 100%);
    border-radius: 15px;
    border: 2px solid rgba(74, 144, 226, 0.2);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

@media (prefers-color-scheme: dark) {
    .url-display {
        background: linear-gradient(135deg, rgba(26, 32, 44, 0.8) 0%, rgba(45, 55, 72, 0.8) 100%);
        border-color: rgba(124, 58, 237, 0.3);
    }
}

.url-text {
    background: #fff;
    border-radius: 10px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    word-break: break-all;
    border: 2px solid #e9ecef;
    padding: 1rem;
    resize: none;
}

@media (prefers-color-scheme: dark) {
    .url-text {
        background: #343a40;
        border-color: #6c757d;
        color: #fff;
    }
}

.short-url {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    word-break: break-all;
    padding: 1rem;
    background: rgba(74, 144, 226, 0.1);
    border-radius: 10px;
    text-align: center;
    border: 2px solid rgba(74, 144, 226, 0.2);
}

.share-url {
    background: var(--light-color);
    border: 2px solid #dee2e6;
    word-break: break-all;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    padding: 1rem;
    border-radius: 10px;
}

@media (prefers-color-scheme: dark) {
    .share-url {
        background: #495057;
        border-color: #6c757d;
        color: #fff;
    }
}

/* アラート */
.alert {
    border-radius: 15px;
    padding: 1.5rem;
    border: none;
    font-weight: 500;
}

.alert-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(32, 201, 151, 0.1) 100%);
    border: 2px solid rgba(40, 167, 69, 0.3);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1) 0%, rgba(231, 76, 60, 0.1) 100%);
    border: 2px solid rgba(220, 53, 69, 0.3);
    color: #721c24;
}

.alert-warning {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1) 0%, rgba(253, 126, 20, 0.1) 100%);
    border: 2px solid rgba(255, 193, 7, 0.3);
    color: #856404;
}

.alert-info {
    background: linear-gradient(135deg, rgba(23, 162, 184, 0.1) 0%, rgba(13, 202, 240, 0.1) 100%);
    border: 2px solid rgba(23, 162, 184, 0.3);
    color: #0c5460;
}

/* カード */
.card {
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid var(--card-border);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.15);
}

.card-body {
    padding: 1.5rem;
}

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

/* 情報グリッド */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.info-item {
    background: rgba(255, 255, 255, 0.6);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.info-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

@media (prefers-color-scheme: dark) {
    .info-item {
        background: rgba(45, 55, 72, 0.6);
        border-color: rgba(255, 255, 255, 0.1);
    }
}

.info-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
}

.info-item p {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
    .info-item p {
        color: #a0aec0;
    }
}

/* ローディング */
.loading-spinner {
    width: 1.25rem;
    height: 1.25rem;
    border: 3px solid rgba(255,255,255,0.3);
    border-top: 3px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Toast */
.toast-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1060;
}

.toast {
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    backdrop-filter: blur(10px);
}

/* 期限切れページ */
.expired-card {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.expired-icon {
    font-size: 5rem;
    margin-bottom: 2rem;
    display: block;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

.expired-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.expired-message {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

@media (prefers-color-scheme: dark) {
    .expired-message {
        color: #a0aec0;
    }
}

.description-section {
    background: var(--light-color);
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-left: 5px solid var(--primary-color);
    text-align: left;
}

@media (prefers-color-scheme: dark) {
    .description-section {
        background: #2d3748;
        border-color: #7c3aed;
    }
}

.description-label {
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

@media (prefers-color-scheme: dark) {
    .description-label {
        color: #a0aec0;
    }
}

.description-text {
    font-size: 1.1rem;
    color: var(--dark-color);
    font-weight: 500;
}

.footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.2);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .main-card {
        padding: 1.5rem;
        border-radius: 15px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .nav-pills .nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .upload-area {
        padding: 3rem 1.5rem;
    }
    
    .upload-icon {
        font-size: 3rem;
    }
    
    .expired-title {
        font-size: 2rem;
    }
    
    .expired-icon {
        font-size: 4rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.75rem;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    body {
        padding: 15px 0;
    }
    
    .main-card {
        padding: 1rem;
        margin: 0 10px;
    }
    
    .header h1 {
        font-size: 1.75rem;
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
}

/* ユーティリティ */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }
.text-center { text-align: center !important; }
.text-muted { color: #6c757d !important; }
.fw-bold { font-weight: 700 !important; }
.fw-semibold { font-weight: 600 !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.gap-2 { gap: 0.5rem !important; }
.gap-3 { gap: 1rem !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-md-center { justify-content: center !important; }
.align-items-center { align-items: center !important; }
.flex-wrap { flex-wrap: wrap !important; }