/* ==========================================================================
   AI BUILDERS - STUDENT REGISTRATION FORM STYLES
   Inspired by unified academic & technology platform design system
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:ital,wght@0,600;0,700;0,800;1,600&display=swap');

:root {
    --primary: #0757D5;
    --primary-hover: #0B5ED7;
    --primary-light: #EFF6FF;
    --primary-border: #DCEAFF;
    --accent: #17213F;
    --navy-900: #11182F;
    --navy-800: #17213F;

    --text-main: #111827;
    --text-muted: #64748B;
    --text-light: #94A3B8;

    --bg-page: #F7F8FA;
    --bg-card: #FFFFFF;
    --border-color: #E2E8F0;
    --border-focus: #0757D5;

    --font-heading: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    --success: #10B981;
    --success-bg: #ECFDF5;
    --success-border: #A7F3D0;
    --error: #EF4444;
    --error-bg: #FEF2F2;
    --error-border: #FECACA;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;

    --shadow-card: 0 10px 30px rgba(17, 24, 47, 0.08), 0 2px 8px rgba(17, 24, 47, 0.04);
    --shadow-hover: 0 16px 36px rgba(7, 87, 213, 0.2);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    min-height: 100vh;
    background: var(--bg-page);
    font-family: var(--font-sans);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px 16px;
    line-height: 1.55;
}

/* ─────────────────────────────────────────────────────────────
   Container & Header
   ───────────────────────────────────────────────────────────── */
.registration-container {
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
}

.brand-header {
    text-align: center;
    margin-bottom: 28px;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: var(--primary);
    color: #FFFFFF;
    font-size: 24px;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 14px rgba(7, 87, 213, 0.35);
    margin-bottom: 12px;
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--navy-800);
}

.brand-subtitle {
    font-size: 15px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ─────────────────────────────────────────────────────────────
   Form Card
   ───────────────────────────────────────────────────────────── */
.reg-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 38px 34px;
    position: relative;
    overflow: hidden;
}

.reg-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-col-full {
    grid-column: 1 / -1;
}

/* ─────────────────────────────────────────────────────────────
   Feedback Alerts
   ───────────────────────────────────────────────────────────── */
.alert-feedback {
    display: none;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 22px;
    align-items: flex-start;
    gap: 12px;
    animation: fadeInDown 0.3s ease-out forwards;
}

.alert-feedback.alert-error {
    display: flex;
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid var(--error-border);
}

.alert-feedback.alert-success {
    display: flex;
    background: var(--success-bg);
    color: #065F46;
    border: 1px solid var(--success-border);
}

.alert-feedback i {
    font-size: 18px;
    margin-top: 2px;
    flex-shrink: 0;
}

/* ─────────────────────────────────────────────────────────────
   Form Controls
   ───────────────────────────────────────────────────────────── */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    position: relative;
}

.form-label {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--navy-800);
    display: flex;
    align-items: center;
    gap: 4px;
}

.form-label .required-star {
    color: var(--error);
    font-weight: 700;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 14px;
    color: #94A3B8;
    font-size: 15px;
    pointer-events: none;
    transition: var(--transition);
}

.form-control {
    width: 100%;
    padding: 11px 14px 11px 42px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    background: #FFFFFF;
    font-size: 14.5px;
    color: var(--text-main);
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3.5px rgba(7, 87, 213, 0.15);
}

.form-control:focus + .input-icon,
.input-wrapper:focus-within .input-icon {
    color: var(--primary);
}

.form-control::placeholder {
    color: #94A3B8;
    font-size: 13.5px;
}

.form-control:disabled,
.form-control[readonly] {
    background: #F1F5F9;
    color: #64748B;
    cursor: not-allowed;
    border-color: #CBD5E1;
}

/* Select specific styling */
select.form-control {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 38px;
    cursor: pointer;
}

/* Password Toggle Icon Button */
.btn-toggle-password {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: #94A3B8;
    cursor: pointer;
    padding: 6px;
    font-size: 15px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-toggle-password:hover {
    color: var(--navy-800);
}

/* Helper & Error hints */
.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
    margin-top: 2px;
}

.form-error {
    display: none;
    font-size: 12px;
    color: var(--error);
    margin-top: 2px;
}

.has-error .form-control {
    border-color: var(--error);
    background: #FFFAFA;
}

.has-error .form-error {
    display: block;
}

/* ─────────────────────────────────────────────────────────────
   Conditional Dynamic Container
   ───────────────────────────────────────────────────────────── */
.conditional-container {
    display: none;
    grid-column: 1 / -1;
    background: #F8FAFC;
    border: 1.5px dashed #CBD5E1;
    border-radius: var(--radius-md);
    padding: 18px 20px;
    animation: fadeInSlide 0.3s ease-out forwards;
}

.conditional-container.is-visible {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.conditional-container .container-header {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--navy-800);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding-bottom: 6px;
    border-bottom: 1px solid #E2E8F0;
}

.badge-locked {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid #BFDBFE;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: auto;
}

/* ─────────────────────────────────────────────────────────────
   Picture Upload Section
   ───────────────────────────────────────────────────────────── */
.picture-upload-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.upload-card-wrapper {
    display: flex;
    align-items: center;
    gap: 20px;
    background: #F8FAFC;
    border: 2px dashed #CBD5E1;
    border-radius: var(--radius-md);
    padding: 16px 20px;
    transition: var(--transition);
}

.upload-card-wrapper:hover,
.upload-card-wrapper.drag-over {
    border-color: var(--primary);
    background: #EFF6FF;
}

.picture-preview-box {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #E2E8F0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
    border: 3px solid #FFFFFF;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    position: relative;
}

.picture-preview-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.picture-preview-box i {
    font-size: 32px;
    color: #94A3B8;
}

.upload-actions {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.btn-upload-trigger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 18px;
    background: #FFFFFF;
    color: var(--navy-800);
    border: 1.5px solid #CBD5E1;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    align-self: flex-start;
}

.btn-upload-trigger:hover {
    background: #F1F5F9;
    border-color: #94A3B8;
}

.btn-remove-photo {
    display: none;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: #FEE2E2;
    color: #DC2626;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    align-self: flex-start;
}

.btn-remove-photo:hover {
    background: #FECACA;
}

.helper-niqab-text {
    font-size: 12.5px;
    color: #64748B;
    line-height: 1.45;
    display: flex;
    align-items: flex-start;
    gap: 6px;
    margin-top: 4px;
}

.helper-niqab-text i {
    color: #94A3B8;
    font-size: 14px;
    margin-top: 1.5px;
    flex-shrink: 0;
}

/* ─────────────────────────────────────────────────────────────
   Submit Button
   ───────────────────────────────────────────────────────────── */
.btn-submit {
    width: 100%;
    padding: 13px 24px;
    background: var(--primary);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 14px rgba(7, 87, 213, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

.btn-submit:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(7, 87, 213, 0.4);
}

.btn-submit:disabled {
    background: #CBD5E1;
    color: #94A3B8;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: #FFFFFF;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.btn-submit.is-loading .spinner {
    display: inline-block;
}

.btn-submit.is-loading .btn-text {
    opacity: 0.8;
}

/* Footer Link */
.form-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: var(--text-muted);
}

.form-footer a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.form-footer a:hover {
    text-decoration: underline;
    color: var(--primary-hover);
}

/* ─────────────────────────────────────────────────────────────
   Success Modal / Card State
   ───────────────────────────────────────────────────────────── */
.success-screen {
    display: none;
    text-align: center;
    padding: 30px 15px;
}

.success-icon-badge {
    width: 72px;
    height: 72px;
    background: var(--success-bg);
    border: 2px solid var(--success-border);
    color: var(--success);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
    margin-bottom: 18px;
}

.success-title {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--navy-800);
    margin-bottom: 8px;
}

.success-desc {
    color: var(--text-muted);
    font-size: 14.5px;
    margin-bottom: 24px;
}

.class-group-card {
    background: #F8FAFC;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    margin: 0 auto 24px;
    max-width: 360px;
    text-align: left;
}

.class-group-card .label {
    font-size: 11.5px;
    text-transform: uppercase;
    color: #64748B;
    font-weight: 700;
}

.class-group-card .value {
    font-size: 16px;
    font-weight: 700;
    color: var(--navy-800);
    margin-top: 2px;
}

/* ─────────────────────────────────────────────────────────────
   Animations & Media Queries
   ───────────────────────────────────────────────────────────── */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 640px) {
    body {
        padding: 20px 12px;
    }

    .reg-card {
        padding: 24px 18px;
        border-radius: var(--radius-md);
    }

    .brand-title {
        font-size: 24px;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .conditional-container.is-visible {
        grid-template-columns: 1fr;
        gap: 14px;
        padding: 14px;
    }

    .upload-card-wrapper {
        flex-direction: column;
        text-align: center;
        padding: 16px;
    }

    .upload-actions {
        align-items: center;
    }

    .btn-upload-trigger,
    .btn-remove-photo {
        align-self: center;
    }

    .helper-niqab-text {
        text-align: center;
        justify-content: center;
    }
}