:root {
    --primary-color: #0056b3;
    --primary-hover: #004494;
    --secondary-color: #17a2b8;
    --secondary-hover: #138496;
    --disabled-color: #6c757d;
    --bg-color: #f4f4f9;
    --surface-color: #ffffff;
    --text-color: #333333;
    --text-muted: #666666;
    --border-color: #dee2e6;
    --error-color: #dc3545;
    --spacing-unit: 1rem;
    --border-radius: 8px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    min-height: 100vh;
}

.app-container {
    display: flex;
    width: 100%;
}

.sidebar {
    width: 280px;
    background-color: var(--primary-color);
    color: white;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-brand {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 2.5rem;
    padding: 0 0.5rem;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-logo {
    width: 32px;
    height: 32px;
    color: white;
}

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

.sidebar-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    transition: all 0.2s;
    font-weight: 500;
}

.sidebar-link:hover,
.sidebar-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
}

.main-content {
    flex-grow: 1;
    margin-left: 280px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.top-bar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.top-bar .user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

h1,
h2,
h3 {
    margin-bottom: var(--spacing-unit);
    color: var(--primary-color);
}

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

a:hover {
    text-decoration: underline;
}

.container {
    width: 100%;
    max-width: 1200px;
}

.card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 2rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.2s;
    background-color: var(--surface-color);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.2);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    text-decoration: none;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    text-decoration: none;
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--secondary-hover);
    text-decoration: none;
}

/* Botões desabilitados sempre cinzas */
button:disabled,
button[disabled],
.btn:disabled,
.btn[disabled] {
    background-color: var(--disabled-color) !important;
    color: white !important;
    cursor: not-allowed !important;
    opacity: 0.65;
    user-select: none;
}

/* Classe para elementos span/div que parecem botões desabilitados */
.btn-disabled,
span.btn-disabled,
div.btn-disabled {
    background-color: var(--disabled-color) !important;
    color: white !important;
    opacity: 0.65;
    user-select: none;
    display: inline-block;
    cursor: not-allowed !important;
}

.btn-disabled *,
span.btn-disabled *,
div.btn-disabled * {
    cursor: not-allowed !important;
}

button:disabled:hover,
button[disabled]:hover,
.btn:disabled:hover,
.btn[disabled]:hover,
.btn-disabled:hover,
span.btn-disabled:hover,
div.btn-disabled:hover {
    background-color: var(--disabled-color) !important;
    color: white !important;
    cursor: not-allowed !important;
    text-decoration: none !important;
    transform: none !important;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Utilities */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 1rem;
}

.mb-1 {
    margin-bottom: 1rem;
}

.error-msg {
    color: var(--error-color);
    background-color: rgba(220, 53, 69, 0.1);
    padding: 0.75rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    text-align: center;
}

/* Layout Specifics */
.login-container {
    max-width: 400px;
    margin: auto;
    width: 100%;
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        width: 80px;
        padding: 2rem 0.5rem;
    }

    .sidebar-brand span,
    .sidebar-link span {
        display: none;
    }

    .main-content {
        margin-left: 80px;
    }
}