/* CSS Variables for Colors and Spacing */
:root {
    /* Colors */
    --color-blue-50: #ffffff;
    --color-blue-700: #E2B051;
    --color-blue-700: #E2B051;
    --color-blue-500: #f6da3b;
    --color-blue-500: #f6da3b;
    --color-blue-500: #f6da3b;
    --color-blue-500: #f6da3b;
    --color-blue-400: #E2B051;
    --color-blue-500: #f6da3b;
    --color-blue-700: #E2B051;
    --color-blue-600: #E2B051;
    --color-blue-700: #E2B051;
    --color-purple-50: #faf5ff;
    --color-purple-400: #E2B051;
    --color-purple-600: #eec372;
    --color-purple-700: #edd23a;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    --color-white: #ffffff;
    --color-green-50: #f0fdf4;
    --color-green-400: #4ade80;
    --color-green-700: #15803d;
    --color-red-50: #fef2f2;
    --color-red-400: #f87171;
    --color-red-700: #b91c1c;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Font Sizes */
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    
    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* 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);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
    :root {
        --color-background: var(--color-gray-900);
        --color-foreground: var(--color-gray-100);
        --color-card: var(--color-gray-800);
        --color-muted: var(--color-gray-700);
        --color-border: var(--color-gray-700);
        --color-input-bg: var(--color-gray-800);
    }
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.8;
    color: var(--color-gray-900);
    background: linear-gradient(135deg, var(--color-blue-50) 0%, var(--color-white) 50%, var(--color-purple-50) 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 50%, var(--color-gray-900) 100%);
        color: var(--color-gray-100);
    }
}

/* Main Container */
.main-container-contact {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin: 0;
    
}

.content-wrapper-contact {
    width: 100%;
    max-width: 48rem; /* 768px */
    opacity: 0;
    transform: translateY(50px);
    animation: fadeInUp 0.8s ease-out forwards;
}

/* Header Section */
.header-section-contact {
    text-align: center;
    margin-bottom: var(--spacing-8);
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInLeft 0.6s ease-out 0.2s forwards;
}

.main-title-contact {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-4);
    background: linear-gradient(135deg, var(--color-blue-600), var(--color-purple-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

@media (prefers-color-scheme: dark) {
    .main-title-contact {
        background: linear-gradient(135deg, var(--color-blue-400), var(--color-purple-400));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
}

.subtitle-contact {
    color: var(--color-gray-600);
    font-size: var(--text-base);
    max-width: 28rem;
    margin: 0 auto;
    line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
    .subtitle-contact {
        color: var(--color-gray-400);
    }
}

/* Form Container */
.form-container-contact {
    opacity: 0;
    transform: scale(0.95);
    animation: scaleIn 0.6s ease-out 0.5s forwards;
}

.form-card-contact {
    backdrop-filter: blur(16px);
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    transition: all 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .form-card-contact {
        background: rgba(31, 41, 55, 0.7);
        border: 1px solid rgba(55, 65, 81, 0.3);
    }
}

.form-card-contact:hover {
    transform: translateY(-4px);
    box-shadow: 0 32px 64px -12px rgba(0, 0, 0, 0.25);
}

/* Card Header */
.card-header-contact {
    text-align: center;
    padding: var(--spacing-6) var(--spacing-6) var(--spacing-4);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
    .card-header-contact {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
}

.card-title-contact {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-2);
    color: var(--color-gray-900);
}

@media (prefers-color-scheme: dark) {
    .card-title-contact {
        color: var(--color-gray-100);
    }
}

.card-description-contact {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
}

@media (prefers-color-scheme: dark) {
    .card-description-contact {
        color: var(--color-gray-400);
    }
}

/* Card Content */
.card-content-contact {
    padding: var(--spacing-6);
}

/* Form Styles */
.contact-form-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.form-row-contact {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

@media (min-width: 768px) {
    .form-row-contact {
        grid-template-columns: 1fr 1fr;
    }
}

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

.form-label-contact {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-700);
}

@media (prefers-color-scheme: dark) {
    .form-label-contact {
        color: var(--color-gray-300);
    }
}

.form-input-contact,
.form-textarea-contact {
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    background: var(--color-white);
    transition: all 0.3s ease;
    outline: none;
}

@media (prefers-color-scheme: dark) {
    .form-input-contact,
    .form-textarea-contact {
        background: var(--color-gray-800);
        border-color: var(--color-gray-600);
        color: var(--color-gray-100);
    }
    
    .form-input-contact::placeholder,
    .form-textarea-contact::placeholder {
        color: var(--color-gray-400);
    }
}

.form-input-contact:focus,
.form-textarea-contact:focus {
    transform: scale(1.02);
    border-color: var(--color-blue-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), var(--shadow-lg);
}

@media (prefers-color-scheme: dark) {
    .form-input-contact:focus,
    .form-textarea-contact:focus {
        border-color: var(--color-blue-400);
        box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1), var(--shadow-lg);
    }
}

.form-textarea-contact {
    resize: none;
    min-height: 120px;
}

/* Error Messages */
.error-message-contact {
    display: none;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-red-700);
    font-size: var(--text-sm);
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .error-message-contact {
        color: var(--color-red-400);
    }
}

.error-message-contact.show {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.error-message-contact::before {
    content: "⚠";
    font-size: var(--text-sm);
}

/* Submit Button */
.submit-container-contact {
    padding-top: var(--spacing-4);
}

.submit-button-contact {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-6);
    background: linear-gradient(135deg, var(--color-blue-600), var(--color-purple-600));
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
    transform-origin: center;
}

.submit-button-contact:hover {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-purple-700));
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
}

.submit-button-contact:active {
    transform: scale(0.95);
}

.submit-button-contact:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.button-content-contact,
.button-loading-contact {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
}

.button-icon-contact {
    width: 16px;
    height: 16px;
}

.button-hover-effect-contact {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(-100%);
    transition: transform 0.7s ease-in-out;
}

.submit-button-contact:hover .button-hover-effect-contact {
    transform: translateX(100%);
}

/* Loading Spinner */
.loading-spinner-contact {
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-white);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Status Message */
.status-message-contact {
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    align-items: center;
    gap: var(--spacing-2);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.status-message-contact.show {
    opacity: 1;
    transform: translateY(0);
}

.status-message-contact.success {
    background: var(--color-green-50);
    color: var(--color-green-700);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.status-message-contact.error {
    background: var(--color-red-50);
    color: var(--color-red-700);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

@media (prefers-color-scheme: dark) {
    .status-message-contact.success {
        background: rgba(34, 197, 94, 0.1);
        color: var(--color-green-400);
    }
    
    .status-message-contact.error {
        background: rgba(239, 68, 68, 0.1);
        color: var(--color-red-400);
    }
}

.status-icon-contact {
    width: 20px;
    height: 20px;
}

/* Footer Note */
.footer-note-contact {
    text-align: center;
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    margin-top: var(--spacing-6);
    opacity: 0;
    animation: fadeIn 0.5s ease-out 1s forwards;
}

@media (prefers-color-scheme: dark) {
    .footer-note-contact {
        color: var(--color-gray-400);
    }
}

/* Toast Notifications */
.toast-container-contact {
    position: fixed;
    top: var(--spacing-4);
    right: var(--spacing-4);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.toast-contact {
    background: var(--color-white);
    color: var(--color-gray-900);
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    min-width: 320px;
    opacity: 0;
    transform: translateX(100%);
    animation: slideInRight 0.3s ease-out forwards;
}

@media (prefers-color-scheme: dark) {
    .toast-contact {
        background: var(--color-gray-800);
        color: var(--color-gray-100);
    }
}

.toast-contact.success {
    border-left-color: var(--color-green-400);
}

.toast-contact.error {
    border-left-color: var(--color-red-400);
}

.toast-contact.removing {
    animation: slideOutRight 0.3s ease-out forwards;
}

/* Icons */
.icon-contact {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

/* Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

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

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOutRight {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* Responsive Design */
@media (max-width: 600px) {
    .main-container-contact {
        padding: var(--spacing-2);
    }
    
    .main-title-contact {
        font-size: var(--text-3xl);
    }
    
    .card-content-contact {
        padding: var(--spacing-4);
    }
    
    .card-header-contact {
        padding: var(--spacing-4) var(--spacing-4) var(--spacing-3);
    }
    
    .toast-contact {
        min-width: 280px;
        margin: 0 var(--spacing-2);
    }
    
    .toast-container-contact {
        left: 0;
        right: 0;
        top: var(--spacing-4);
        align-items: center;
    }
}

/* Focus states for accessibility */
.form-input-contact:focus-visible,
.form-textarea-contact:focus-visible,
.submit-button-contact:focus-visible {
    outline: 2px solid var(--color-blue-500);
    outline-offset: 2px;
}

@media (prefers-color-scheme: dark) {
    .form-input-contact:focus-visible,
    .form-textarea-contact:focus-visible,
    .submit-button-contact:focus-visible {
        outline-color: var(--color-blue-400);
    }
}