:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-primary: #238636; /* Greenish from screenshot or Blue */
    --accent-blue: #1f6feb;
    --border-color: #30363d;
    --card-bg: #161b22;
    --hover-bg: #21262d;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    height: 100vh;
    display: flex;
    overflow: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
}

a {
    text-decoration: none;
    color: var(--accent-blue);
}

/* Layout */
.app-container {
    display: flex;
    width: 100%;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    flex-shrink: 0;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 2.5rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #1f6feb, #8b5cf6);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 6px;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

.nav-item:hover, .nav-item.active {
    background-color: rgba(31, 111, 235, 0.1);
    color: var(--accent-blue);
}

.nav-item i {
    width: 20px;
    text-align: center;
}

.bottom-menu {
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: var(--bg-primary);
}

/* Header */
.top-header {
    height: 70px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    background-color: var(--bg-primary);
}

.search-bar {
    position: relative;
    width: 400px;
}

.search-bar input {
    width: 100%;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 10px 16px 10px 40px;
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.search-bar i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
}

.user-profile {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.user-profile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Content Area */
.content-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

/* Dashboard Grid */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
}

.stat-title {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-change {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-change.positive { color: #3fb950; }
.stat-change.negative { color: #f85149; }

/* Charts Area */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    min-height: 300px;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background-color: #1158c7;
}

/* Auth Pages */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-primary);
}

.auth-box {
    width: 400px;
    padding: 2rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.auth-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 10px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* Image Grid */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.image-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s;
}

.image-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-blue);
}

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

.image-info {
    padding: 1rem;
}

.image-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.image-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.status-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    margin-top: 0.5rem;
}

.status-pendente { background-color: rgba(210, 153, 34, 0.2); color: #d29922; }
.status-aprovado { background-color: rgba(63, 185, 80, 0.2); color: #3fb950; }
.status-rejeitado { background-color: rgba(248, 81, 73, 0.2); color: #f85149; }

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: rgba(22, 27, 34, 0.5);
    transition: all 0.3s;
}

.upload-area:hover {
    border-color: var(--accent-blue);
    background-color: rgba(31, 111, 235, 0.05);
}

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

/* ========================================
   TUTORIAL SYSTEM STYLES
   ======================================== */

/* Tutorial Modal - Dark Theme */
.tutorial-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
    animation: tutorialFadeIn 0.2s ease;
}

@keyframes tutorialFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.tutorial-modal-content {
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    padding: 0;
    border-radius: 16px;
    max-width: 480px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    animation: tutorialSlideIn 0.3s ease;
    overflow: hidden;
}

@keyframes tutorialSlideIn {
    from { 
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.tutorial-modal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15));
    border-bottom: 1px solid var(--border-color);
}

.tutorial-modal-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    flex-shrink: 0;
}

.tutorial-modal-header h4 {
    flex: 1;
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tutorial-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all 0.2s;
}

.tutorial-modal-close:hover {
    background: rgba(248, 81, 73, 0.2);
    color: #f85149;
}

.tutorial-modal-content > p {
    padding: 24px;
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.tutorial-modal-footer {
    padding: 16px 24px;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--border-color);
}

.tutorial-hint {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

.tutorial-hint i {
    color: #d29922;
}

/* Tutorial Toggle Button */
#tutorialToggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s;
}

#tutorialToggle:hover {
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

#tutorialToggle.active {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

#tutorialToggle.active:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

/* Tutorial Notification Toast */
.tutorial-notification {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 10001;
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.5);
    animation: notificationSlideUp 0.4s ease;
}

@keyframes notificationSlideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.tutorial-notification.fade-out {
    animation: notificationSlideDown 0.3s ease forwards;
}

@keyframes notificationSlideDown {
    from {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    to {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

.tutorial-notification i {
    font-size: 1.1rem;
}