:root {
     --primary: #e69526;
     --primary-hover: #d18015;
     --bg-light: #f5f5f5;
     --text-dark: #1a1a1a;
     --text-muted: #71717a;
     --input-bg: #f8faff;
     --border-color: #e4e4e7;
 }

 body {
     margin: 0;
     padding: 0;
     font-family: 'Plus Jakarta Sans', sans-serif;
     background-color: var(--bg-light);
     min-height: 100vh;
     display: flex;
     flex-direction: column;
 }

 nav {
     padding: 20px 50px;
     display: flex;
     justify-content: space-between;
     align-items: center;
     background: transparent;
 }

 .logo {
     font-family: 'Playfair Display', serif;
     font-size: 26px;
     color: var(--primary);
     font-weight: 700;
     cursor: pointer;
     text-decoration: none;
 }

 .nav-links {
     display: flex;
     align-items: center;
     gap: 30px;
 }

 .nav-links a {
     text-decoration: none;
     color: var(--text-dark);
     font-weight: 500;
     font-size: 15px;
     transition: 0.3s;
 }

 .nav-links a:hover {
     color: var(--primary);
 }

 .btn-register-nav {
     background: var(--primary);
     color: white !important;
     padding: 12px 28px;
     border-radius: 12px;
     transition: 0.3s;
 }

 .btn-register-nav:hover {
     background: var(--primary-hover);
     transform: translateY(-2px);
 }

 .main-container {
     flex: 1;
     display: flex;
     justify-content: center;
     align-items: center;
     padding: 20px;
 }

 .auth-card {
     background: white;
     padding: 45px;
     border-radius: 24px;
     box-shadow: 0 20px 50px rgba(0, 0, 0, 0.06);
     width: 100%;
     max-width: 420px;
     text-align: center;
 }

 .card-icon {
     color: var(--primary);
     margin-bottom: 20px;
     display: inline-block;
 }

 h2 {
     font-family: 'Playfair Display', serif;
     font-size: 28px;
     margin: 0 0 8px 0;
     color: var(--text-dark);
 }

 .subtitle {
     color: var(--text-muted);
     font-size: 14px;
     margin-bottom: 35px;
     font-weight: 400;
 }

 .tabs {
     background: #f1f1f1;
     padding: 5px;
     border-radius: 14px;
     display: flex;
     margin-bottom: 30px;
 }

 .tab {
     flex: 1;
     padding: 12px;
     border-radius: 10px;
     cursor: pointer;
     font-weight: 600;
     color: var(--text-muted);
     transition: all 0.3s ease;
     font-size: 14px;
 }

 .tab.active {
     background: white;
     color: var(--text-dark);
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
 }

 .input-group {
     position: relative;
     width: 100%;
     margin-bottom: 20px;
     text-align: left;
 }

 .input-group svg {
     position: absolute;
     left: 18px;
     top: 50%;
     transform: translateY(-50%);
     width: 20px;
     height: 20px;
     color: #9ca3af;
     pointer-events: none;
     transition: color 0.3s ease;
     z-index: 2;
 }

 .input-group:focus-within svg {
     color: var(--primary);
 }

 .input-group input {
     width: 100%;
     height: 54px;
     padding: 0 20px 0 54px;
     background-color: var(--input-bg);
     border: 1px solid var(--border-color);
     border-radius: 12px;
     font-size: 15px;
     color: var(--text-dark);
     font-family: 'Plus Jakarta Sans', sans-serif;
     box-sizing: border-box;
     outline: none;
     transition: all 0.3s ease;
 }

 .input-group input::placeholder {
     color: #a1a1aa;
 }

 .input-group input:focus {
     border-color: var(--primary);
     background-color: #fff;
     box-shadow: 0 0 0 4px rgba(230, 149, 38, 0.1);
 }

 .btn-submit {
     width: 100%;
     padding: 16px;
     background: var(--primary);
     color: white;
     border: none;
     border-radius: 12px;
     font-size: 16px;
     font-weight: 600;
     cursor: pointer;
     margin-top: 10px;
     transition: 0.3s;
     font-family: 'Plus Jakarta Sans', sans-serif;
 }

 .btn-submit:hover {
     background: var(--primary-hover);
     transform: translateY(-2px);
     box-shadow: 0 10px 20px rgba(230, 149, 38, 0.2);
 }

 .error-message {
     color: var(--danger);
     background: #fee2e2;
     padding: 10px;
     border-radius: 8px;
     margin-bottom: 20px;
     font-size: 13px;
     display: block;
 }

 .success-message {
     color: #166534;
     background: #dcfce7;
     padding: 10px;
     border-radius: 8px;
     margin-bottom: 20px;
     font-size: 13px;
     display: block;
 }