@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css');

:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --light-blue: #dbeafe;
    --accent-blue: #60a5fa;
    --white: #ffffff;
    --light-gray: #f8fafc;
    --text-gray: #64748b;
    --dark-gray: #334155;
    --success-green: #10b981;
    --error-red: #ef4444;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 10px 25px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    color: var(--dark-gray);
    line-height: 1.6;
    min-height: 100vh;
}

.header {
    background: var(--white);
    box-shadow: var(--shadow-light);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.logo i {
    font-size: 2rem;
    color: var(--secondary-blue);
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.upload-section {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    padding: 2rem;
    margin-bottom: 3rem;
    text-align: center;
}

.upload-section h2 {
    color: var(--primary-blue);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.upload-section p {
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.upload-area {
    border: 2px dashed var(--accent-blue);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    background: var(--light-blue);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--secondary-blue);
    background: rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.upload-area.dragover {
    border-color: var(--secondary-blue);
    background: rgba(59, 130, 246, 0.15);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3rem;
    color: var(--secondary-blue);
    margin-bottom: 1rem;
}

.upload-text {
    font-size: 1.1rem;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
}

.upload-hint {
    font-size: 0.9rem;
    color: var(--text-gray);
}

#fileInput {
    display: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    margin: 0.5rem;
}

.btn-primary {
    background: var(--secondary-blue);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: var(--white);
    color: var(--secondary-blue);
    border: 2px solid var(--secondary-blue);
}

.btn-secondary:hover {
    background: var(--secondary-blue);
    color: var(--white);
}

.loading {
    display: none;
    margin: 1rem 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--light-blue);
    border-top: 4px solid var(--secondary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.gallery-section {
    margin-top: 3rem;
}

.gallery-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.gallery-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.gallery-stats {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.image-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.image-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-heavy);
}

.image-preview {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--light-gray);
}

.image-info {
    padding: 1rem;
}

.image-name {
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
    word-break: break-word;
}

.image-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-gray);
    margin-bottom: 1rem;
}

.image-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

.btn-danger {
    background: var(--error-red);
    color: var(--white);
}

.btn-danger:hover {
    background: #dc2626;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-gray);
}

.empty-icon {
    font-size: 4rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
    display: none;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-green);
    color: #065f46;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-red);
    color: #991b1b;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-gray);
}

.modal-image {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
        margin: 1rem auto;
    }

    .upload-section {
        padding: 1.5rem;
    }

    .upload-area {
        padding: 2rem 1rem;
    }

    .images-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }

    .gallery-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .header-content {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .images-grid {
        grid-template-columns: 1fr;
    }

    .upload-area {
        padding: 1.5rem 1rem;
    }

    .upload-icon {
        font-size: 2rem;
    }
}

.login-screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(30, 58, 138, .08);
    backdrop-filter: blur(3px);
    z-index: 2000
}

.login-card {
    width: 100%;
    max-width: 380px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    padding: 2rem 1.5rem
}

.login-title {
    color: var(--primary-blue);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: .25rem
}

.login-sub {
    color: var(--text-gray);
    font-size: .9rem;
    margin-bottom: 1.25rem
}

.login-input {
    width: 100%;
    border: 1px solid var(--light-blue);
    background: var(--light-gray);
    color: var(--dark-gray);
    border-radius: var(--border-radius);
    padding: .75rem 1rem;
    font-size: 1rem;
    transition: var(--transition);
    outline: none
}

.login-input:focus {
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, .15);
    background: var(--white)
}

.login-btn {
    width: 100%;
    margin-top: .75rem;
    padding: .8rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    background: var(--secondary-blue);
    color: var(--white);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition)
}

.login-btn:hover {
    background: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium)
}

.login-erro {
    display: none;
    margin-top: .6rem;
    font-size: .9rem;
    color: var(--error-red)
}

.login-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    color: var(--text-gray);
    font-size: .85rem
}

@media (max-width:480px) {
    .login-card {
        padding: 1.5rem 1.25rem
    }
}