/* ===== CSS RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== CSS VARIABLES (Brand Colors) ===== */
:root {
    /* Brand Colors from Knowledge Base */
    --primary-orange: #FC5E37;
    --primary-green: #004116;
    --light-mint: #CFEBD5;
    --cream: #FEF9E6;
    --lime-green: #D4EB9D;
    
    /* Extended Color Palette */
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --success: var(--primary-green);
    --warning: var(--primary-orange);
    --info: #3b82f6;
    --error: #ef4444;
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ===== ADVANCED MICRO-ANIMATIONS ===== */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% { transform: translate3d(0,0,0); }
    40%, 43% { transform: translate3d(0,-30px,0); }
    70% { transform: translate3d(0,-15px,0); }
    90% { transform: translate3d(0,-4px,0); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes wiggle {
    0%, 7% { transform: rotateZ(0); }
    15% { transform: rotateZ(-15deg); }
    20% { transform: rotateZ(10deg); }
    25% { transform: rotateZ(-10deg); }
    30% { transform: rotateZ(6deg); }
    35% { transform: rotateZ(-4deg); }
    40%, 100% { transform: rotateZ(0); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 5px rgba(252, 94, 55, 0.3); }
    50% { box-shadow: 0 0 20px rgba(252, 94, 55, 0.6), 0 0 30px rgba(252, 94, 55, 0.4); }
}

@keyframes shimmer {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

/* ===== BASE STYLES ===== */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-900);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--cream) 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== UTILITY CLASSES ===== */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== LOGIN SCREEN ===== */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-orange) 100%);
    padding: var(--space-4);
}

.login-container {
    background: var(--white);
    padding: var(--space-12);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 400px;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-container {
    text-align: center;
    margin-bottom: var(--space-8);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    transition: all 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-orange);
    stroke-width: 2.5;
    transition: all 0.3s ease;
}

.logo:hover .logo-icon {
    animation: wiggle 0.8s ease-in-out;
}

.logo-text {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-orange), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    margin: 0;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    font-weight: 600;
    color: var(--gray-700);
    font-size: var(--font-size-sm);
}

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

.input-wrapper input {
    width: 100%;
    padding: var(--space-3) var(--space-4) var(--space-3) var(--space-10);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
    background: var(--white);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(252, 94, 55, 0.1);
    animation: glow 0.3s ease-out;
}

.input-icon {
    position: absolute;
    left: var(--space-3);
    width: 18px;
    height: 18px;
    color: var(--gray-400);
    z-index: 1;
}

.toggle-password {
    position: absolute;
    right: var(--space-3);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.toggle-password:hover {
    background: var(--gray-100);
}

.eye-icon {
    width: 18px;
    height: 18px;
    color: var(--gray-400);
}

.login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4);
    background: linear-gradient(135deg, var(--primary-orange), var(--primary-green));
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    transform: translateZ(0);
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.login-btn:hover::before {
    left: 100%;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.login-btn:active {
    transform: scale(0.98);
}

.btn-icon {
    width: 18px;
    height: 18px;
}

.login-hint {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--light-mint);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--primary-green);
}

.hint-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ===== MAIN APPLICATION ===== */
.main-app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===== HEADER ===== */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left .logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.header-left .logo-icon {
    width: 28px;
    height: 28px;
    color: var(--primary-orange);
}

.header-left .logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-orange), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.main-nav {
    display: flex;
    gap: var(--space-2);
    background: var(--gray-100);
    padding: var(--space-1);
    border-radius: var(--radius-lg);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-orange);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.nav-btn.active::after {
    width: 80%;
}

.nav-btn:hover {
    background: var(--white);
    color: var(--gray-900);
    transform: translateY(-1px);
}

.nav-btn.active {
    background: var(--white);
    color: var(--primary-orange);
    box-shadow: var(--shadow-sm);
}

.nav-icon {
    width: 16px;
    height: 16px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-700);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    transform: translateZ(0);
}

.header-btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.header-btn.primary {
    background: var(--primary-orange);
    border-color: var(--primary-orange);
    color: var(--white);
}

.header-btn.primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.header-btn.primary:hover::before {
    left: 100%;
}

.header-btn.primary:hover {
    background: #e55a32;
    border-color: #e55a32;
}

.user-menu {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.user-btn:hover {
    background: var(--gray-50);
}

.user-icon, .dropdown-icon {
    width: 16px;
    height: 16px;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-2);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-fast);
    z-index: 1000;
}

.user-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    animation: scaleIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    color: var(--gray-700);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: rgba(252, 94, 55, 0.1);
    transform: translateX(4px);
}

.item-icon {
    width: 16px;
    height: 16px;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.view {
    display: none;
    flex: 1;
}

.view.active {
    display: flex;
    flex-direction: column;
}

/* ===== FORM BUILDER ===== */
.builder-layout {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    height: calc(100vh - 73px);
    overflow: hidden;
}

.builder-sidebar {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-right: 1px solid var(--gray-200);
    padding: var(--space-6);
    overflow-y: auto;
}

.sidebar-header {
    margin-bottom: var(--space-6);
}

.sidebar-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.sidebar-header p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin: 0;
}

.element-categories {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    animation: fadeInLeft 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.category {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.category:nth-child(2) {
    animation-delay: 0.1s;
}

.category h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--space-4);
}

.elements-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
}

.form-element {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4);
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: grab;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    transform: translateZ(0);
}

.form-element:hover {
    background: var(--light-mint);
    border-color: var(--primary-orange);
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 25px rgba(252, 94, 55, 0.15);
}

.form-element:active {
    cursor: grabbing;
    transform: translateY(-2px) scale(1.01);
    transition: all 0.1s ease;
}

.form-element.dragging {
    transform: rotate(5deg) scale(1.05);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

.element-icon {
    width: 24px;
    height: 24px;
    color: var(--primary-orange);
}

.form-element span {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--gray-700);
}

/* ===== FORM CANVAS ===== */
.form-canvas-container {
    display: flex;
    flex-direction: column;
    background: var(--gray-50);
    overflow: hidden;
}

.canvas-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.form-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-title-input, .form-description-input {
    border: none;
    background: transparent;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.form-title-input:focus, .form-description-input:focus {
    outline: none;
    background: var(--gray-50);
}

.form-description-input {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--gray-600);
}

.canvas-actions {
    display: flex;
    gap: var(--space-2);
}

.action-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--gray-700);
    cursor: pointer;
    transition: var(--transition-fast);
}

.action-btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.form-canvas {
    flex: 1;
    padding: var(--space-6);
    overflow-y: auto;
    min-height: 400px;
    position: relative;
}

.canvas-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 400px;
    text-align: center;
    color: var(--gray-500);
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.placeholder-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-4);
    color: var(--gray-400);
    animation: bounce 2s infinite;
}

.canvas-placeholder h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--gray-700);
}

.canvas-placeholder p {
    font-size: var(--font-size-base);
    margin: 0;
}

.form-canvas.has-elements .canvas-placeholder {
    display: none;
}

.drop-zone {
    min-height: 60px;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--space-2) 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(252, 94, 55, 0.05) 50%, transparent 70%);
    background-size: 20px 20px;
}

.drop-zone.active {
    opacity: 1;
    border-color: var(--primary-orange);
    background: linear-gradient(45deg, rgba(252, 94, 55, 0.1) 30%, rgba(252, 94, 55, 0.05) 50%, rgba(252, 94, 55, 0.1) 70%);
    animation: pulse 1.5s infinite;
    box-shadow: 0 0 20px rgba(252, 94, 55, 0.3);
}

.drop-zone.drop-hover {
    animation: glow 0.8s infinite alternate;
    transform: scale(1.02);
}

.form-field {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin: var(--space-3) 0;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    transform: translateZ(0);
}

.form-field:hover {
    border-color: var(--primary-orange);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.form-field.selected {
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(252, 94, 55, 0.1);
    animation: glow 2s infinite alternate;
    transform: translateY(-2px);
}

.form-field.field-adding {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-field.field-removing {
    animation: fadeInLeft 0.4s cubic-bezier(0.4, 0, 0.2, 1) reverse;
}

.field-controls {
    position: absolute;
    top: -12px;
    right: var(--space-2);
    display: flex;
    gap: var(--space-1);
    opacity: 0;
    transition: var(--transition-fast);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.form-field:hover .field-controls,
.form-field.selected .field-controls {
    opacity: 1;
}

.field-control-btn {
    width: 24px;
    height: 24px;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.field-control-btn:hover {
    background: var(--gray-50);
    transform: scale(1.1);
}

.field-control-btn:active {
    transform: scale(0.95);
}

.field-control-btn.delete:hover {
    background: var(--error);
    border-color: var(--error);
    color: var(--white);
}

.field-control-icon {
    width: 12px;
    height: 12px;
}

/*