/* Client Login Styles - GitHub-inspired with OTP Support */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #0969da;
    --color-success: #1a7f37;
    --color-success-bg: #dafbe1;
    --color-danger: #cf222e;
    --color-text: #24292f;
    --color-text-secondary: #57606a;
    --color-text-muted: #8b949e;
    --color-border: #d0d7de;
    --color-border-light: #eaeef2;
    --color-bg: #ffffff;
    --color-bg-secondary: #f6f8fa;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

.container { min-height: 100vh; display: flex; flex-direction: column; }

.header {
    padding: 16px 32px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header a {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 600;
    font-size: 20px;
}

.header svg { width: 32px; height: 32px; }

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 32px 16px 64px;
}

.auth-container { width: 100%; max-width: 380px; }

.auth-header { margin-bottom: 24px; }

.auth-header h1 { font-size: 24px; font-weight: 600; margin-bottom: 8px; }

.auth-header p { font-size: 14px; color: var(--color-text-secondary); }

.auth-form {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    text-align: left;
}

.form-group { margin-bottom: 16px; position: relative; }

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 5px 12px;
    font-size: 14px;
    line-height: 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 32px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.3);
}

.send-otp-btn {
    display: inline-block;
    margin-top: 8px;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.send-otp-btn:hover { background: var(--color-bg-secondary); border-color: var(--color-primary); }
.send-otp-btn.sent { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success); }

.otp-section { display: none; margin-top: 16px; padding: 16px; background: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.otp-section.show { display: block; }

.otp-label { font-size: 13px; color: var(--color-text-secondary); margin-bottom: 12px; text-align: center; }

.otp-inputs { display: flex; justify-content: center; gap: 6px; margin-bottom: 12px; }

.otp-input {
    width: 40px;
    height: 40px;
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
}

.otp-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.2); }
.otp-input.verified { border-color: var(--color-success); background: var(--color-success-bg); }

.otp-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; }

.otp-timer { font-size: 12px; color: var(--color-primary); text-align: center; margin-top: 8px; }

.password-section { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--color-border-light); }

.divider { display: flex; align-items: center; text-align: center; margin-bottom: 16px; }
.divider::before, .divider::after { content: ''; flex: 1; border-bottom: 1px solid var(--color-border); }
.divider span { padding: 0 10px; color: var(--color-text-muted); font-size: 12px; }

.btn {
    display: block;
    width: 100%;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: 0.2s;
    min-height: 36px;
}

.btn-primary { background-color: #1a7f37; border-color: rgba(27, 31, 35, 0.15); color: #ffffff; }
.btn-primary:hover { background-color: #166b29; }

.btn-block { width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px; }

.btn-link { background: none; border: none; color: var(--color-primary); font-size: 13px; font-weight: 500; cursor: pointer; padding: 4px 8px; }
.btn-link:hover { text-decoration: underline; }

.form-footer { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--color-border-light); }
.form-footer p { font-size: 12px; color: var(--color-text-secondary); line-height: 1.6; }
.form-footer a { color: var(--color-primary); text-decoration: none; }
.form-footer a:hover { text-decoration: underline; }

.footer { padding: 24px 32px; text-align: center; border-top: 1px solid var(--color-border-light); margin-top: auto; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-bottom: 12px; }
.footer-links a { font-size: 12px; color: var(--color-text-secondary); text-decoration: none; }
.footer-links a:hover { color: var(--color-primary); text-decoration: underline; }
.footer p { font-size: 12px; color: var(--color-text-muted); }

.success-message { display: none; text-align: center; padding: 32px 20px; }
.success-message.show { display: block; }
.success-message h2 { font-size: 24px; font-weight: 600; color: var(--color-success); margin-bottom: 8px; }
.success-message p { font-size: 14px; color: var(--color-text-secondary); }

.error-toast {
    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(100px);
    padding: 12px 20px; background: var(--color-danger); color: white; font-size: 14px;
    border-radius: var(--radius-md); opacity: 0; transition: all 0.3s; z-index: 1000;
}
.error-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.success-toast {
    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(100px);
    padding: 12px 20px; background: var(--color-success); color: white; font-size: 14px;
    border-radius: var(--radius-md); opacity: 0; transition: all 0.3s; z-index: 1000;
}
.success-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.spinner {
    width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #ffffff; border-radius: 50%; animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 480px) {
    .header { padding: 12px 16px; }
    .main-content { padding: 16px 12px 32px; }
    .auth-form { padding: 16px; }
    .form-group input { font-size: 16px; min-height: 36px; }
    .otp-input { width: 36px; height: 36px; font-size: 16px; }
    .otp-actions { flex-direction: column; }
    .btn-block { font-size: 14px; }
    .footer { padding: 16px 12px; }
}

@media (min-width: 769px) {
    .main-content { padding: 64px 32px; }
    .auth-container { max-width: 380px; }
}