/* static/css/welcome/welcome.css */

*, *::before, *::after {
  box-sizing: border-box;
}

:root {
    /* 全新商务配色方案 - 现代高级感 (from home.css) */
    --color-background-light: #E5E7EB; /* 主背景色 (淡冷灰) */
    --color-surface-white: #FFFFFF;    /* 内容/卡片背景 (纯白) */
    --color-text-primary: #2C3E50;     /* 主文字颜色 (深石板灰) */
    --color-text-secondary: #7F8C8D;   /* 辅助文字/边框颜色 (中灰) */
    --color-accent-start: #0A7D7D;     /* 强调色起始 (深青色) */
    --color-accent-end: #1ABC9C;       /* 强调色结束 (亮青色，用于渐变) */
    --color-success: #28A745;          /* 成功提示 (标准绿) */
    --color-error: #DC3545;            /* 错误提示 (标准红) */

    /* 映射到旧变量名以便兼容 */
    --primary-accent-color: var(--color-accent-start);
    --primary-accent-darker: var(--color-accent-end);
    --background-color: var(--color-background-light);
    --surface-color: var(--color-surface-white);
    --text-primary-color: var(--color-text-primary);
    --text-secondary-color: var(--color-text-secondary);
    --border-color: #E0E0E0; /* 统一的浅灰色边框 */
    --error-color: var(--color-error);
}

html, body {
    margin: 0; padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary-color);
    height: 100%;
    -webkit-tap-highlight-color: transparent;
    display: flex; justify-content: center; align-items: center;
}

.container {
    max-width: 420px;
    width: calc(100% - 40px); /* Adjusted to prevent overflow on small screens */
    margin: 0 auto; padding: 20px;
    display: flex; flex-direction: column;
}

.welcome-header { text-align: center; margin-bottom: 30px; flex-shrink: 0; }
.logo { width: 80px; height: 80px; margin-bottom: 15px; }
.app-title { font-size: 24px; font-weight: 600; margin: 0 0 8px 0; }
.app-tagline { font-size: 14px; color: var(--text-secondary-color); margin: 0; }

.form-container { 
    /* width: 100%; */ /* Removed: Let flexbox handle the width */
    background-color: var(--surface-color);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.tab-nav { display: flex; margin-bottom: 30px; border-bottom: 1px solid var(--border-color); }
.tab-btn {
    flex: 1; background: none; border: none;
    color: var(--text-secondary-color);
    padding: 15px 0; font-size: 18px; font-weight: 500;
    cursor: pointer; transition: color 0.3s, border-bottom-color 0.3s;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}
.tab-btn.active { color: var(--primary-accent-color); border-bottom-color: var(--primary-accent-color); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.form-content { display: flex; flex-direction: column; gap: 20px; }
.input-group { position: relative; }
.input-icon {
    position: absolute; left: 15px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary-color);
    font-size: 16px;
}
.form-input {
    width: 100%; padding: 14px 15px 14px 45px;
    background-color: var(--background-color); /* Use lighter background for input */
    border: 1px solid var(--border-color);
    border-radius: 8px; color: var(--text-primary-color);
    font-size: 16px; outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.form-input::placeholder { color: var(--text-secondary-color); }
.form-input:focus { 
    border-color: var(--primary-accent-color); 
    box-shadow: 0 0 0 3px rgba(10, 125, 125, 0.15);
}

.captcha-group .form-input { padding-right: 110px; }
.captcha-image {
    position: absolute; right: 5px; top: 50%; transform: translateY(-50%);
    height: 38px; width: 100px; border-radius: 5px;
    background-color: var(--text-secondary-color);
    cursor: pointer; object-fit: cover;
}
.error-message { color: var(--error-color); font-size: 14px; min-height: 1.2em; text-align: center; }
.btn {
    width: 100%; padding: 14px 0; border-radius: 8px;
    font-size: 16px; font-weight: 600; cursor: pointer; border: none;
    transition: background-color 0.2s, transform 0.1s;
    margin-top: 10px;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn:active:not(:disabled) { transform: scale(0.98); }
.btn-primary { background-color: var(--primary-accent-color); color: var(--color-surface-white); }
.btn-primary:hover:not(:disabled) { background-color: var(--primary-accent-darker); }

/* --- VVV 新增：自定义模态框样式 VVV --- */
.modal-overlay {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex; justify-content: center; align-items: center;
    z-index: 1000; opacity: 1;
    transition: opacity 0.3s ease;
}
.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}
.modal-box {
    background-color: var(--surface-color);
    padding: 25px 30px; border-radius: 12px;
    text-align: center; width: 80%; max-width: 320px;
    transform: scale(1);
    transition: transform 0.3s ease;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.modal-overlay.hidden .modal-box {
    transform: scale(0.9);
}
.modal-title { font-size: 20px; font-weight: 600; margin: 0 0 10px 0; color: var(--text-primary-color); }
.modal-content { font-size: 14px; color: var(--text-secondary-color); margin: 0 0 25px 0; }
/* --- ^^^ 样式结束 ^^^ --- */