/* style.css */
:root {
    --primary-color: #1a2a6c;
    --secondary-color: #b21f1f;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #f8f9fa;
    --card-bg: #fff;
    --border-color: #e0e0e0;
    --error-color: #e53e3e;
    --success-color: #48bb78;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    min-height: 100vh;
    padding: 0;
    margin: 0;
}

.app-container {
    max-width: 100%;
    width: 100%;
    margin: 0 auto;
    background: white;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 头部样式 */
.app-header {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 18px 20px;
    text-align: center;
    position: relative;
}

.app-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.app-header p {
    font-size: 0.9rem;
    opacity: 0.9;
    max-width: 400px;
    margin: 0 auto;
}

.header-icon {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 2rem;
    opacity: 0.2;
}

/* 主要内容区 */
.main-content {
    padding: 20px;
    max-width: 500px;
    margin: 0 auto;
}

/* 上传区域 */
.upload-section {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-weight: 600;
}

.section-title i {
    background: var(--primary-color);
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.95rem;
}

/* 文件上传区域 */
.file-input {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 30px 15px;
    text-align: center;
    transition: all 0.2s;
    background: #f8fafc;
    cursor: pointer;
    overflow: hidden;
}

.file-input:hover {
    border-color: var(--primary-color);
}

.file-input i {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.file-input p {
    margin-bottom: 10px;
    color: var(--light-text);
    font-size: 0.9rem;
}

.file-input .btn {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s;
    font-size: 0.9rem;
}

input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* 密码输入框样式 - 与计数器输入框一致 */
.counter-input input[type="password"] {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    background-color: white;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
    transition: border-color 0.3s;
}

.counter-input input[type="password"]:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
}

/* 移除密码输入框的增减按钮 */
.counter-input input[type="password"] + .counter-btn {
    display: none;
}
/* 计数器样式 */
.counter-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.counter-input {
    display: flex;
    align-items: center;
    gap: 10px;
}

.counter-input input {
    flex: 1;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    text-align: center;
    transition: border-color 0.2s;
    -webkit-appearance: none;
}

.counter-input input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.counter-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.counter-btn:active {
    transform: scale(0.95);
}

/* 提交按钮 */
.submit-btn {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 14px 0;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(26, 42, 108, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.submit-btn:active {
    transform: translateY(1px);
}

/* 结果区域 */
.result-section {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    display: none;
}

.result-section.active {
    display: block;
}

.link-box {
    background: #f0f4f8;
    border-radius: 12px;
    padding: 16px;
    margin-top: 15px;
    border: 2px dashed var(--border-color);
}

.link-box p {
    font-size: 0.95rem;
    margin-bottom: 12px;
    color: var(--primary-color);
    font-weight: 500;
}

.link-input {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.link-input input {
    flex: 1;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.9rem;
    background: white;
    width: 100%;
}

.copy-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    font-size: 0.95rem;
}

.copy-btn:active {
    transform: scale(0.98);
}

/* 信息卡片 */
.info-section {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 15px;
}

.info-card {
    background: #f8fafc;
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    border-left: 3px solid var(--primary-color);
}

.info-card i {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.info-card h3 {
    font-size: 0.95rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.info-card p {
    font-size: 0.8rem;
    color: var(--light-text);
}

/* 错误提示 */
.error {
    background: #fff5f5;
    color: var(--error-color);
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
    border-left: 3px solid var(--error-color);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

/* 页脚 */
.app-footer {
    text-align: center;
    padding: 15px 20px;
    background: #f8f9fa;
    color: var(--light-text);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
}

.stats-text {
    margin-top: 10px;
    font-size: 0.75rem;
    color: var(--light-text);
}

/* 响应式调整 */
@media (min-width: 500px) {
    .app-container {
        max-width: 500px;
        margin: 10px auto;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        min-height: calc(100vh - 20px);
    }
    
    .link-input {
        flex-direction: row;
    }
    
    .copy-btn {
        width: auto;
        padding: 12px 20px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease-out forwards;
}

/* 过期页面样式 */
.expired-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px 25px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin: 20px;
}

.expired-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: #ff6b6b;
    text-shadow: 0 0 15px rgba(255, 107, 107, 0.7);
}

.expired-btn {
    display: inline-block;
    background: #fff;
    color: #2575fc;
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: none;
    cursor: pointer;
    width: 100%;
    max-width: 200px;
}

.expired-btn:active {
    transform: scale(0.98);
}

/* 无效链接页面样式 */
.invalid-container {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px 25px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin: 20px;
}

.invalid-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: #d63031;
}

.invalid-btn {
    display: inline-block;
    background: #d63031;
    color: white;
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(214, 48, 49, 0.3);
    border: none;
    cursor: button;
    width: 100%;
    max-width: 200px;
}

.invalid-btn:active {
    transform: scale(0.98);
}

@media (max-width: 480px) {
    .expired-container, .invalid-container {
        padding: 25px 20px;
        border-radius: 14px;
    }
}