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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --success-color: #10b981;
    --error-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #0f172a;
    min-height: 100vh;
    padding: 20px;
    color: var(--text-primary);
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(-45deg, #1e3a8a, #1e40af, #2563eb, #3b82f6, #60a5fa);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    opacity: 0.9;
}

.background-animation::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: pulse 20s ease-in-out infinite;
}

.background-animation::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.03) 2px, rgba(255, 255, 255, 0.03) 4px);
    animation: slide 30s linear infinite;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

@keyframes slide {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(100px);
    }
}

.container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 20px;
    padding: 30px 0;
}

.logo-container {
    margin-bottom: 0;
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.logo {
    width: 65%;
    max-width: 400px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
}

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

.logo-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    letter-spacing: 2px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3);
    color: #ffffff;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    font-weight: 300;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    color: #f1f5f9;
    margin-bottom: 30px;
}

.form-container {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="email"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s;
    font-family: inherit;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.file-upload-wrapper {
    position: relative;
}

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

.file-upload-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.file-upload-label:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.file-upload-text {
    color: var(--text-primary);
}

.file-upload-icon {
    font-size: 1.2rem;
}

.image-preview {
    margin-top: 16px;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.image-preview img {
    width: 100%;
    height: auto;
    display: block;
    max-height: 300px;
    object-fit: contain;
    background: var(--bg-secondary);
}

.remove-image-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    box-shadow: var(--shadow);
}

.remove-image-btn:hover {
    background: var(--error-color);
    transform: scale(1.1);
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: inherit;
}

.submit-btn:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.submit-btn:active:not(:disabled) {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loader {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.error-message {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 6px;
    display: block;
    min-height: 0;
    height: auto;
}

.error-message:empty {
    display: none;
}

.message {
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 2px solid var(--success-color);
    color: var(--success-color);
}

.success-message h3 {
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid var(--error-color);
    color: var(--error-color);
}

.error-message h3 {
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.hidden {
    display: none !important;
}

footer {
    text-align: center;
    color: white;
    opacity: 0.9;
    font-size: 0.9rem;
    padding: 20px 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Responsive Design */
@media (max-width: 640px) {
    header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .form-container {
        padding: 24px;
    }

    .form-group {
        margin-bottom: 20px;
    }

    .logo {
        width: 70%;
        max-width: 100%;
    }

    .logo-text {
        font-size: 1.4rem;
    }
}

/* Loading state */
.submit-btn.loading .btn-text {
    opacity: 0.7;
}

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