/* Base Styles & Variables */
:root {
    --deep-blue: #002366;
    --light-blue: #1e88e5;
    --green: #38a169;
    --light-green: #2f855a;
    --cream: #fff8e1;
    --gold: #ffd700;
    --white: #ffffff;
    --gray: #f5f5f5;
    --dark-gray: #2d3748;
    --medium-gray: #e0e0e0;
    --error: #e53935;
    --success: #43a047;
    --warning: #ffc107;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-radius: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, var(--deep-blue), var(--light-green));
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--dark-gray);
    padding: 15px;
}

/* Decorative Elements */
.decoration {
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(255, 215, 0, 0.1), transparent);
    z-index: -1;
}

.decoration-1 {
    top: -30px;
    right: -30px;
}

.decoration-2 {
    bottom: -20px;
    left: -50px;
    width: 120px;
    height: 120px;
    background: linear-gradient(45deg, transparent, rgba(255, 248, 225, 0.15));
}

/* Main Container */
.register-container {
    width: 100%;
    max-width: 960px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: row;
    transform: scale(0.95);
    opacity: 0;
    animation: scaleUp 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.login-container, .reset-container {
    width: 100%;
    max-width: 480px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
    z-index: 1;
    transform: scale(0.95);
    opacity: 0;
    animation: scaleUp 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes scaleUp {
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Header */
.register-header {
    background: linear-gradient(to right, var(--deep-blue), var(--light-green));
    color: var(--white);
    padding: 2rem;
    text-align: center;
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.login-header, .reset-header {
    background: linear-gradient(to right, var(--deep-blue), var(--light-green));
    color: var(--white);
    padding: 2rem;
    text-align: center;
    position: relative;
}

.register-header::after, .login-header::after, .reset-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--cream));
}

.logo {
    height: 80px;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.register-header h1, .login-header h1, .reset-header h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.register-header p, .login-header p, .reset-header p {
    opacity: 0.9;
    font-size: 0.95rem;
}

.register-header p {
    max-width: 300px;
}

/* Form */
.register-form {
    padding: 2rem;
    flex: 1;
    max-width: 480px;
}

.login-form, .reset-form {
    padding: 2rem;
}

.error-message, .success-message {
    padding: 0.6rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.error-message {
    color: var(--error);
    background-color: rgba(229, 57, 53, 0.1);
    animation: shake 0.5s cubic-bezier(.36, .07, .19, .97) both;
}

.success-message {
    color: var(--success);
    background-color: rgba(67, 160, 71, 0.1);
}

.error-message.file-error {
    font-size: 0.8rem;
    margin-top: 4px;
    background: none;
    padding: 0;
    animation: none;
}

@keyframes shake {
    10%, 90% {
        transform: translateX(-1px);
    }
    20%, 80% {
        transform: translateX(2px);
    }
    30%, 50%, 70% {
        transform: translateX(-4px);
    }
    40%, 60% {
        transform: translateX(4px);
    }
}

/* Progress Bar */
.progress-bar {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    max-width: 100%;
    flex-wrap: nowrap;
}

.progress-step {
    flex: 1;
    text-align: center;
    padding: 0.6rem;
    background: var(--medium-gray);
    color: var(--dark-gray);
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: var(--border-radius);
    margin: 0 4px;
    transition: var(--transition);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.progress-step.active {
    background: linear-gradient(to right, var(--green), var(--deep-blue));
    color: var(--white);
}

/* Form Layout */
.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    max-width: 100%;
}

.form-group {
    flex: 1;
    position: relative;
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
}

.form-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    gap: 0.8rem;
}

/* Form Elements */
label {
    display: block;
    margin-bottom: 0.4rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    color: var(--deep-blue);
    font-size: 0.9rem;
}

.input-field, .select-field {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.5rem;
    border: 2px solid var(--medium-gray);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    transition: var(--transition);
    background-color: var(--gray);
}

.input-field:focus, .select-field:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.2);
    background-color: var(--white);
}

.input-icon {
    position: absolute;
    left: 0.8rem;
    top: 2.2rem;
    color: var(--deep-blue);
    opacity: 0.7;
    font-size: 0.9rem;
}

.select-field {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.8rem center;
    background-size: 0.9em;
    padding-right: 2rem;
}

/* File Upload */
.file-upload {
    position: relative;
    cursor: pointer;
    padding: 8px;
    border: 2px dashed var(--medium-gray);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    min-height: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--gray);
}

.file-upload:hover {
    border-color: var(--green);
    background-color: rgba(56, 161, 105, 0.1);
}

.file-upload.error {
    border-color: var(--error);
}

.file-upload.uploaded {
    border: 2px solid var(--success);
    background-color: rgba(67, 160, 71, 0.1);
}

.file-upload input[type="file"] {
    display: none;
}

.preview-image {
    max-width: 100%;
    max-height: 100px;
    margin-bottom: 8px;
    border-radius: var(--border-radius);
    display: none;
    object-fit: contain;
}

.preview-image[src] {
    display: block;
}

.file-text {
    margin: 4px 0;
    font-size: 0.85rem;
    color: var(--dark-gray);
}

/* Terms Container */
.terms-container {
    max-height: 60vh;
    overflow-y: auto;
    padding: 1rem;
    border: 2px solid var(--medium-gray);
    border-radius: var(--border-radius);
    background: var(--white);
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
    width: 100%;
}

.terms-container h2 {
    color: var(--deep-blue);
    border-bottom: 2px solid var(--green);
    padding-bottom: 8px;
    margin-top: 0;
    font-family: 'Poppins', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
}

.terms-content h3 {
    color: var(--deep-blue);
    margin-bottom: 12px;
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
}

.terms-content h4 {
    color: var(--dark-gray);
    margin: 15px 0 12px;
}

.terms-list {
    padding-left: 15px;
}

.terms-list li {
    margin-bottom: 12px;
    line-height: 1.5;
    font-size: 0.85rem;
}

.terms-list strong {
    color: var(--dark-gray);
}

.student-name {
    font-weight: bold;
    color: var(--deep-blue);
    text-decoration: underline;
}

.signature-line {
    margin-top: 20px;
    padding-top: 12px;
    border-top: 1px dashed var(--green);
    font-style: italic;
    font-size: 0.85rem;
    color: var(--dark-gray);
}

.terms-container::-webkit-scrollbar {
    width: 6px;
}

.terms-container::-webkit-scrollbar-track {
    background: var(--gray);
    border-radius: var(--border-radius);
}

.terms-container::-webkit-scrollbar-thumb {
    background: var(--deep-blue);
    border-radius: var(--border-radius);
}

.terms-container::-webkit-scrollbar-thumb:hover {
    background: var(--green);
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
}

.checkbox-label input {
    margin-right: 8px;
}

/* Document Selection */
.document-selection {
    margin-bottom: 1rem;
    padding: 1rem;
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius);
    background: var(--gray);
}

.document-selection h3 {
    margin-top: 0;
    color: var(--deep-blue);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    font-weight: 500;
}

.document-selection .checkbox-group {
    margin: 0.6rem 0;
}

.document-selection .checkbox-label {
    margin-bottom: 0.6rem;
}

/* Hidden Elements */
.hidden {
    display: none;
}

/* Password Strength */
.password-strength {
    height: 3px;
    background-color: var(--medium-gray);
    border-radius: 2px;
    margin-top: 0.4rem;
    position: relative;
    overflow: hidden;
}

.password-strength::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background-color: var(--error);
    transition: var(--transition);
}

.password-strength[data-strength="1"]::after {
    width: 20%;
    background-color: var(--error);
}

.password-strength[data-strength="2"]::after {
    width: 40%;
    background-color: #fd7e14;
}

.password-strength[data-strength="3"]::after {
    width: 60%;
    background-color: var(--warning);
}

.password-strength[data-strength="4"]::after {
    width: 80%;
    background-color: #20c997;
}

.password-strength[data-strength="5"]::after {
    width: 100%;
    background-color: var(--success);
}

.hint {
    font-size: 0.7rem;
    margin-top: 0.2rem;
    display: none;
}

/* Buttons */
.btn {
    width: auto;
    padding: 0.8rem 1.2rem;
    background: linear-gradient(to right, var(--green), var(--deep-blue));
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-family: 'Poppins', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
}

.btn:hover {
    background: linear-gradient(to right, var(--light-green), #001a4d);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.btn:active {
    transform: translateY(0);
}

.prev-btn {
    background: linear-gradient(to right, var(--dark-gray), var(--gray));
}

.prev-btn:hover {
    background: linear-gradient(to right, var(--gray), var(--dark-gray));
}

/* Login Link */
.login-link {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--dark-gray);
}

.login-link a {
    color: var(--deep-blue);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.login-link a:hover {
    color: var(--green);
    text-decoration: underline;
}

/* Forgot Password Link */
.forgot-link {
    display: block;
    text-align: right;
    font-size: 0.8rem;
    margin-top: 0.4rem;
    color: var(--dark-gray);
    text-decoration: none;
    transition: var(--transition);
}

.forgot-link:hover {
    color: var(--deep-blue);
    text-decoration: underline;
}

/* Register Link */
.register-link {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--dark-gray);
    padding-top: 1rem;
    border-top: 1px solid var(--gray);
}

.register-link a {
    color: var(--deep-blue);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.register-link a:hover {
    color: var(--green);
    text-decoration: underline;
}

/* Social Login */
.social-login {
    margin-top: 1rem;
    text-align: center;
}

.social-login p {
    font-size: 0.8rem;
    color: var(--dark-gray);
    margin-bottom: 0.8rem;
    position: relative;
}

.social-login p::before,
.social-login p::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 30%;
    height: 1px;
    background-color: var(--gray);
}

.social-login p::before {
    left: 0;
}

.social-login p::after {
    right: 0;
}

.social-buttons {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
}

.social-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.social-btn:hover {
    transform: translateY(-2px);
}

.social-btn.google {
    background-color: #DB4437;
}

.social-btn.microsoft {
    background-color: #0078D4;
}

.circle-image {
    border-radius: 50%;
    width: 100px;
    height: 100px;
    object-fit: cover;
}

/* Responsive Design */
@media (max-width: 768px) {
    .register-container {
        flex-direction: column;
        max-width: 480px;
    }

    .register-header {
        flex: none;
        padding: 1.5rem;
    }

    .register-header::after {
        display: none;
    }

    .register-form {
        flex: none;
        padding: 1.5rem;
        max-width: 100%;
    }

    .login-container, .reset-container {
        flex-direction: column;
        max-width: 480px;
    }

    .login-header, .reset-header {
        flex: none;
        padding: 1.5rem;
    }

    .login-header::after, .reset-header::after {
        display: none;
    }

    .login-form, .reset-form {
        flex: none;
        padding: 1.5rem;
        max-width: 100%;
    }

    .form-row {
        flex-direction: column;
        gap: 0.8rem;
    }

    .form-navigation {
        flex-direction: column;
        gap: 0.5rem;
    }

    .progress-bar {
        flex-wrap: wrap;
        gap: 0.4rem;
    }

    .progress-step {
        font-size: 0.8rem;
        padding: 0.5rem;
        margin: 0 3px;
    }

    .logo {
        height: 70px;
    }

    .register-header h1, .login-header h1, .reset-header h1 {
        font-size: 1.6rem;
    }

    .register-header p, .login-header p, .reset-header p {
        font-size: 0.9rem;
        max-width: 100%;
    }

    .terms-container {
        max-height: 50vh;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .register-header, .login-header, .reset-header {
        padding: 1rem;
    }

    .register-header h1, .login-header h1, .reset-header h1 {
        font-size: 1.4rem;
    }

    .register-header p, .login-header p, .reset-header p {
        font-size: 0.85rem;
    }

    .register-form, .login-form, .reset-form {
        padding: 1rem;
    }

    .btn {
        padding: 0.7rem 1rem;
        font-size: 0.85rem;
    }

    .input-field, .select-field {
        padding: 0.7rem 0.8rem 0.7rem 2.2rem;
        font-size: 0.85rem;
    }

    .input-icon {
        left: 0.7rem;
        top: 2rem;
        font-size: 0.85rem;
    }

    .select-field {
        background-position: right 0.7rem center;
        background-size: 0.85em;
        padding-right: 1.8rem;
    }

    .terms-container {
        max-height: 40vh;
    }
}