/* ========================================
   redemo.top — 邀请码弹窗样式 v5
   设计系统: design-tokens.css
   ======================================== */
@import url('./design-tokens.css');

.invite-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.78);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    animation: fadeIn var(--duration-normal) var(--ease-out);
    padding: var(--space-4);
}
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.invite-modal {
    background: var(--bg-elevated);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-xl);
    padding: var(--space-10) var(--space-8);
    width: 420px;
    max-width: 100%;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--duration-slow) var(--ease-out);
}
@keyframes slideUp {
    from { transform: translateY(24px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}

.modal-header {
    text-align: center;
    margin-bottom: var(--space-8);
}
.modal-header h2 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0 0 8px;
    letter-spacing: -0.3px;
}
.modal-header p {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin: 0;
}

.input-group {
    position: relative;
    margin-bottom: 4px;
}
.input-group input,
.input-group textarea {
    width: 100%;
    padding: 13px 44px 13px 16px;
    background: var(--glass-sm);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--text-base);
    font-family: var(--font-sans);
    outline: none;
    transition: all var(--transition-fast);
}
.input-group textarea {
    padding: 12px 16px;
    resize: vertical;
    min-height: 70px;
    line-height: var(--leading-normal);
}
.input-group input:focus,
.input-group textarea:focus {
    border-color: rgba(129,140,248,0.40);
    box-shadow: 0 0 0 3px var(--accent-dim);
    background: var(--glass-md);
}
.input-group input::placeholder,
.input-group textarea::placeholder {
    color: rgba(255,255,255,0.16);
}

.input-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 16px;
    pointer-events: none;
}

/* 消息 */
.msg {
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    margin-top: var(--space-3);
    display: none;
    line-height: var(--leading-normal);
}
.msg.error {
    display: block;
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    color: var(--danger);
}
.msg.success {
    display: block;
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 11px 28px;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: var(--accent-500);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(99,102,241,0.25);
}
.btn-primary:hover {
    background: var(--accent-400);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(99,102,241,0.35);
}
.btn-primary:active { background: var(--accent-600); transform: translateY(0); }

.btn-primary:disabled {
    background: var(--glass-sm);
    color: var(--text-disabled);
    cursor: not-allowed;
    box-shadow: none;
}
.btn-primary:disabled:hover {
    background: var(--glass-sm);
    transform: none;
    box-shadow: none;
}

.btn-full {
    display: flex;
    width: 100%;
    margin-top: var(--space-5);
}

/* 表单底部 */
.form-footer {
    text-align: center;
    margin-top: var(--space-5);
    font-size: var(--text-xs);
    color: var(--text-muted);
}
.form-footer a {
    color: var(--accent-300);
    text-decoration: none;
    font-weight: var(--font-medium);
}
.form-footer a:hover { color: var(--accent-200); text-decoration: underline; }

.modal-footer {
    text-align: center;
    margin-top: var(--space-8);
    padding-top: var(--space-4);
    border-top: 1px solid rgba(255,255,255,0.06);
    font-size: var(--text-xs);
    color: var(--text-disabled);
}

/* Loading spinner */
.btn-loading {
    position: relative;
    color: transparent !important;
}
.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255,255,255,0.25);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }