/* =====================================================
   Material Design Base Styles
   ===================================================== */

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

html {
    font-size: 16px;
}

body {
    font-family: 'Roboto', sans-serif;
    color: #212121;
    background-color: #fafafa;
    line-height: 1.5;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: #1976d2;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #1565c0;
}

code {
    background-color: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 2px;
    padding: 2px 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

/* =====================================================
   Button Styles
   ===================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 2px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn i {
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

.btn-primary {
    background-color: #1976d2;
    color: white;
}

.btn-primary:hover {
    background-color: #1565c0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: #757575;
    color: white;
}

.btn-secondary:hover {
    background-color: #616161;
}

.btn-success {
    background-color: #4caf50;
    color: white;
}

.btn-success:hover {
    background-color: #45a049;
}

.btn-danger {
    background-color: #f44336;
    color: white;
}

.btn-danger:hover {
    background-color: #da190b;
}

.btn-warning {
    background-color: #ff9800;
    color: white;
}

.btn-warning:hover {
    background-color: #e68900;
}

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

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* =====================================================
   Form Styles
   ===================================================== */

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #424242;
    font-size: 0.9rem;
}

.input-wrapper {
    display: flex;
    align-items: center;
    border: 1px solid #bdbdbd;
    border-radius: 2px;
    background-color: white;
    transition: all 0.2s;
    padding: 0 0.5rem;
}

.input-wrapper:focus-within {
    border-color: #1976d2;
    box-shadow: 0 0 0 2px rgba(25, 118, 210, 0.1);
}

.input-wrapper i {
    color: #9e9e9e;
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
    flex: 1;
    border: none;
    padding: 0.75rem 0;
    font-size: 1rem;
    font-family: inherit;
    background-color: transparent;
    outline: none;
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder,
input[type="number"]::placeholder {
    color: #bdbdbd;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

/* =====================================================
   Alert Styles
   ===================================================== */

.alert {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-radius: 2px;
    margin-bottom: 1.5rem;
    border-left: 4px solid;
}

.alert i {
    margin-right: 0.75rem;
    font-size: 1.3rem;
}

.alert-error {
    background-color: #ffebee;
    color: #c62828;
    border-left-color: #f44336;
}

.alert-success {
    background-color: #e8f5e9;
    color: #2e7d32;
    border-left-color: #4caf50;
}

.alert-warning {
    background-color: #fff3e0;
    color: #e65100;
    border-left-color: #ff9800;
}

.alert-info {
    background-color: #e3f2fd;
    color: #1565c0;
    border-left-color: #1976d2;
}

/* =====================================================
   Card Styles
   ===================================================== */

.card {
    background-color: white;
    border-radius: 2px;
    box-shadow: 0 2px 1px -1px rgba(0, 0, 0, 0.2),
                0 1px 1px 0 rgba(0, 0, 0, 0.14),
                0 1px 3px 0 rgba(0, 0, 0, 0.12);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.card-header {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e0e0e0;
}

.card-body {
    padding: 1rem 0;
}

.card-footer {
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* =====================================================
   Table Styles
   ===================================================== */

table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
}

thead {
    background-color: #f5f5f5;
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 500;
    border-bottom: 2px solid #e0e0e0;
    color: #424242;
}

td {
    padding: 1rem;
    border-bottom: 1px solid #e0e0e0;
}

tbody tr:hover {
    background-color: #fafafa;
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* =====================================================
   Container and Layout
   ===================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -0.5rem;
    margin-left: -0.5rem;
}

.col {
    flex: 1 1 auto;
    padding-right: 0.5rem;
    padding-left: 0.5rem;
    min-width: 0;
}

.col-1 { flex: 0 0 8.333333%; }
.col-2 { flex: 0 0 16.666667%; }
.col-3 { flex: 0 0 25%; }
.col-4 { flex: 0 0 33.333333%; }
.col-6 { flex: 0 0 50%; }
.col-8 { flex: 0 0 66.666667%; }
.col-12 { flex: 0 0 100%; }

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }