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

:root {
    /* Professional Color Palette */
    --white: #FFFFFF;
    --off-white: #F8FAFC;
    --light-gray: #F1F5F9;
    --medium-gray: #E2E8F0;
    --dark-gray: #334155;
    --charcoal: #1E293B;
    --sky-blue: #0EA5E9;
    --sky-light: #E0F2FE;
    --dark-blue: #0369A1;
    --navy: #0C4A6E;
    --deep-navy: #292144;
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    
    /* Professional Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-secondary: 'Plus Jakarta Sans', 'Inter', sans-serif;
    
    /* Spacing System */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== BASE STYLES ===== */
body {
    font-family: var(--font-primary);
    background: linear-gradient(145deg, var(--light-gray) 0%, var(--off-white) 100%);
    color: var(--charcoal);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ===== HEADER - CLEAN & PROFESSIONAL ===== */
.header {
    background: var(#ffffff);
    padding: var(--space-5) 0;
    border-bottom: 3px solid var(--sky-blue);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

/* Logo - Clean, No Box, Just Image */
.logo {
    width: 140px;
    height: auto;
    max-height: 90px;
    object-fit: contain;
    display: block;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text h1 {
    font-family: var(--font-secondary);
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: var(--space-1);
}

.logo-text p {
    font-size: 1rem;
    font-weight: 400;
    color: var(--sky-blue);
    letter-spacing: 0.3px;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    padding: var(--space-8) 0 var(--space-12);
}

/* ===== REGISTRATION CONTAINER ===== */
.registration-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    width: 100%;
    border: 1px solid var(--medium-gray);
}

/* ===== FORM HEADER ===== */
.form-header {
    background: linear-gradient(135deg, var(--navy) 0%, var(--deep-navy) 100%);
    padding: var(--space-8) var(--space-10);
    text-align: center;
}

.form-header h2 {
    font-family: var(--font-secondary);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--white);
    margin-bottom: var(--space-2);
}

.form-header p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
    max-width: 700px;
    margin: 0 auto;
}

/* ===== PROGRESS INDICATOR ===== */
.progress-indicator {
    display: none; /* Hidden for cleaner look */
}

/* ===== FORM GRID - PERFECT 3-COLUMN LAYOUT ===== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    padding: var(--space-8);
}

/* ===== FORM SECTIONS ===== */
.form-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    border: 1px solid var(--medium-gray);
    transition: var(--transition-base);
    height: fit-content;
}

.form-section:hover {
    border-color: var(--sky-blue);
    box-shadow: var(--shadow-md);
}

.section-title {
    font-family: var(--font-secondary);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--deep-navy);
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--sky-light);
    letter-spacing: -0.01em;
}

/* ===== FORM GROUPS - PERFECT SPACING ===== */
.form-group {
    margin-bottom: var(--space-5);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--charcoal);
    margin-bottom: var(--space-2);
    letter-spacing: 0.3px;
    text-transform: uppercase;
    font-size: 0.8rem;
}

.required {
    color: var(--error);
    margin-left: var(--space-1);
    font-weight: 700;
}

/* ===== FORM INPUTS - CLEAN & PROFESSIONAL ===== */
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1.5px solid var(--medium-gray);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: var(--transition-fast);
    background-color: var(--white);
    color: var(--charcoal);
    line-height: 1.5;
}

.form-group input:hover,
.form-group select:hover {
    border-color: var(--sky-blue);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--sky-blue);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.08);
    background-color: var(--white);
}

.form-group input::placeholder {
    color: #94A3B8;
    font-weight: 400;
    font-size: 0.9rem;
}

/* ===== FORM ROWS ===== */
.form-row {
    display: flex;
    gap: var(--space-4);
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

/* ===== ADDRESS CHECKBOX - ELEGANT DESIGN ===== */
.address-checkbox {
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background-color: var(--light-gray);
    border-radius: var(--radius-md);
    border: 1px solid var(--medium-gray);
}

.address-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border: 2px solid var(--dark-gray);
    border-radius: var(--radius-sm);
    cursor: pointer;
    accent-color: var(--sky-blue);
}

.address-checkbox label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--deep-navy);
    cursor: pointer;
    margin: 0;
    text-transform: none;
}

.correspondence-address {
    border-top: 1px dashed var(--medium-gray);
    padding-top: var(--space-5);
    margin-top: var(--space-3);
}

/* ===== DOCUMENTS SECTION ===== */
.documents-section {
    margin: 0 var(--space-8) var(--space-8);
    padding: var(--space-6);
    background-color: var(--light-gray);
    border-radius: var(--radius-lg);
    border: 1px solid var(--medium-gray);
}

.section-subtitle {
    color: var(--dark-gray);
    font-size: 0.95rem;
    margin-bottom: var(--space-5);
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

/* ===== FILE UPLOAD - MODERN & CLEAN ===== */
.file-upload-wrapper {
    display: flex;
    border: 1.5px solid var(--medium-gray);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-fast);
    background: var(--white);
}

.file-upload-wrapper:focus-within {
    border-color: var(--sky-blue);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.08);
}

.file-upload-wrapper input[type="file"] {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
}

.file-upload-info {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    background: var(--white);
}

.file-name {
    display: block;
    font-size: 0.9rem;
    color: var(--charcoal);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-size {
    display: block;
    font-size: 0.75rem;
    color: #94A3B8;
    margin-top: 2px;
}

.browse-btn {
    background-color: var(--light-gray);
    border: none;
    padding: 0 var(--space-6);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--deep-navy);
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    border-left: 1.5px solid var(--medium-gray);
}

.browse-btn:hover {
    background-color: var(--sky-blue);
    color: var(--white);
    border-left-color: var(--sky-blue);
}

/* ===== ERROR MESSAGES ===== */
.error-message {
    display: block;
    color: var(--error);
    font-size: 0.8rem;
    margin-top: var(--space-2);
    font-weight: 500;
}

/* ===== MESSAGE CONTAINER ===== */
.message-container {
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    margin: 0 var(--space-8) var(--space-6);
    display: none;
    font-weight: 500;
    font-size: 0.95rem;
}

.message-container.success {
    display: block;
    background-color: rgba(16, 185, 129, 0.08);
    color: var(--success);
    border: 1px solid var(--success);
}

.message-container.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.08);
    color: var(--error);
    border: 1px solid var(--error);
}

/* ===== FORM ACTIONS - MINIMAL & POWERFUL ===== */
.form-actions {
    padding: 0 var(--space-8) var(--space-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-6);
}

.form-footer {
    flex: 1;
}

.form-footer p {
    color: var(--dark-gray);
    font-size: 0.85rem;
    margin-bottom: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* ===== SUBMIT BUTTON - ELEGANT & PROFESSIONAL ===== */
.submit-btn {
    padding: var(--space-4) var(--space-10);
    background: linear-gradient(135deg, var(--navy) 0%, var(--deep-navy) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-secondary);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    min-width: 220px;
    box-shadow: var(--shadow-md);
    text-transform: uppercase;
}

.submit-btn:hover {
    background: linear-gradient(135deg, var(--deep-navy) 0%, #041016 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    border-top-color: var(--white);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

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

/* ===== FOOTER - CLEAN & MINIMAL ===== */
.footer {
    background-color: var(--deep-navy);
    color: var(--white);
    padding: var(--space-8) 0;
    margin-top: var(--space-12);
    border-top: 3px solid var(--sky-blue);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-6);
}

.footer-info p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-bottom: var(--space-2);
    line-height: 1.5;
}

.footer-links a {
    color: var(--sky-blue);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    margin: 0 var(--space-3);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
}

/* ===== RESPONSIVE DESIGN - PERFECT AT EVERY BREAKPOINT ===== */

/* Large Desktop (1200px - 1600px) */
@media (max-width: 1400px) {
    .container {
        max-width: 95%;
    }
    
    .form-grid {
        gap: var(--space-5);
        padding: var(--space-6);
    }
    
    .form-section {
        padding: var(--space-5);
    }
}

/* Tablet Landscape (992px - 1199px) */
@media (max-width: 1199px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .logo {
        width: 120px;
        max-height: 80px;
    }
    
    .logo-text h1 {
        font-size: 1.8rem;
    }
}

/* Tablet Portrait (768px - 991px) */
@media (max-width: 991px) {
    .container {
        padding: 0 var(--space-5);
    }
    
    .logo-container {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }
    
    .logo {
        width: 110px;
        max-height: 75px;
    }
    
    .logo-text h1 {
        font-size: 1.6rem;
    }
    
    .form-header {
        padding: var(--space-6);
    }
    
    .form-header h2 {
        font-size: 1.6rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        padding: var(--space-5);
        gap: var(--space-5);
    }
    
    .documents-grid {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }
    
    .documents-section {
        margin: 0 var(--space-5) var(--space-5);
        padding: var(--space-5);
    }
    
    .message-container {
        margin: 0 var(--space-5) var(--space-5);
    }
    
    .form-actions {
        padding: 0 var(--space-5) var(--space-5);
        flex-direction: column;
        text-align: center;
    }
    
    .form-footer {
        text-align: center;
    }
    
    .submit-btn {
        width: 100%;
        min-width: 100%;
        padding: var(--space-4);
    }
}

/* Mobile Landscape (576px - 767px) */
@media (max-width: 767px) {
    .header {
        padding: var(--space-4) 0;
    }
    
    .logo {
        width: 100px;
        max-height: 70px;
    }
    
    .logo-text h1 {
        font-size: 1.4rem;
    }
    
    .logo-text p {
        font-size: 0.9rem;
    }
    
    .form-header h2 {
        font-size: 1.4rem;
    }
    
    .form-header p {
        font-size: 0.95rem;
    }
    
    .form-row {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .form-row .form-group {
        margin-bottom: 0;
    }
    
    .form-group {
        margin-bottom: var(--space-4);
    }
    
    .section-title {
        font-size: 1.1rem;
    }
    
    .file-upload-wrapper {
        flex-direction: column;
    }
    
    .browse-btn {
        padding: var(--space-3);
        border-left: none;
        border-top: 1.5px solid var(--medium-gray);
    }
}

/* Mobile Portrait (375px - 575px) */
@media (max-width: 575px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .logo {
        width: 90px;
        max-height: 65px;
    }
    
    .logo-text h1 {
        font-size: 1.2rem;
    }
    
    .form-header {
        padding: var(--space-5);
    }
    
    .form-header h2 {
        font-size: 1.2rem;
    }
    
    .form-header p {
        font-size: 0.9rem;
    }
    
    .form-grid {
        padding: var(--space-4);
    }
    
    .form-section {
        padding: var(--space-4);
    }
    
    .documents-section {
        margin: 0 var(--space-4) var(--space-4);
        padding: var(--space-4);
    }
    
    .message-container {
        margin: 0 var(--space-4) var(--space-4);
    }
    
    .form-actions {
        padding: 0 var(--space-4) var(--space-4);
    }
    
    .submit-btn {
        font-size: 0.95rem;
        padding: var(--space-3) var(--space-5);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links a {
        display: inline-block;
        margin: 0 var(--space-2);
    }
}

/* Small Mobile (320px - 374px) */
@media (max-width: 374px) {
    .logo {
        width: 80px;
        max-height: 60px;
    }
    
    .logo-text h1 {
        font-size: 1.1rem;
    }
    
    .logo-text p {
        font-size: 0.8rem;
    }
    
    .form-group label {
        font-size: 0.75rem;
    }
    
    .form-group input,
    .form-group select {
        padding: var(--space-2) var(--space-3);
        font-size: 0.85rem;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.w-100 { width: 100%; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ===== PRINT STYLES ===== */
@media print {
    .header,
    .footer,
    .submit-btn,
    .browse-btn {
        display: none;
    }
    
    .registration-container {
        box-shadow: none;
        border: 1px solid #000;
    }
}