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

:root {
    --bg-primary: #1a1d29;
    --bg-secondary: #252936;
    --bg-tertiary: #2d3142;
    --accent-blue: #4a90e2;
    --accent-blue-hover: #357abd;
    --accent-green: #4caf50;
    --accent-red: #f44336;
    --accent-yellow: #ffc107;
    --text-primary: #ffffff;
    --text-secondary: #b0b3c1;
    --border-color: #3d4152;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
    min-height: 100vh;
}
h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

h2 {
    font-size: 2rem;
    margin: 1.5rem 0 1rem 0;
    color: var(--text-primary);
    font-weight: 500;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2rem 0;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
}

.form-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
}

.logo-container {
    text-align: center;
    max-width: 600px;
    margin: 100px auto;
    padding: 60px 40px;
    background-color: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
}

.logo-container img {
    max-width: 200px;
    margin-bottom: 30px;
}
form {
    margin-bottom: 2rem;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="date"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 12px 16px;
    margin-bottom: 20px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="date"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

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

input[type="number"] {
    width: auto;
    min-width: 150px;
}

::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}
button,
.btn,
.header-buttons a {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--accent-blue);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
}

button:hover,
.btn:hover,
.header-buttons a:hover {
    background-color: var(--accent-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

button:active {
    transform: translateY(0);
}

.link-button {
    background: none;
    color: var(--accent-red);
    padding: 4px 8px;
    text-decoration: underline;
    font-size: 0.9rem;
}

.link-button:hover {
    background: none;
    color: #d32f2f;
    transform: none;
    box-shadow: none;
}
.header-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 30px;
}
a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-blue-hover);
    text-decoration: underline;
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.back-link:hover {
    color: var(--text-primary);
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    overflow: hidden;
}

th {
    background-color: var(--accent-blue);
    color: white;
    padding: 16px;
    text-align: left;
    font-weight: 600;
}

td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background-color: rgba(74, 144, 226, 0.05);
}
.form-group {
    margin: 25px 0;
}

.checkboxes {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    max-height: 300px;
    overflow-y: auto;
}

.checkboxes label {
    display: flex;
    align-items: center;
    padding: 12px;
    margin-bottom: 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.checkboxes label:hover {
    background-color: rgba(74, 144, 226, 0.1);
}

.checkboxes input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    margin-bottom: 0;
    cursor: pointer;
    accent-color: var(--accent-blue);
}

.checkboxes::-webkit-scrollbar {
    width: 8px;
}

.checkboxes::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: 4px;
}

.checkboxes::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.checkboxes::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}
.info {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin: 15px 0;
}

.create-form {
    background-color: var(--bg-tertiary);
    padding: 25px;
    border-radius: 8px;
    margin: 20px 0;
    border-left: 4px solid var(--accent-blue);
}

.subproject {
    background-color: var(--bg-tertiary);
    padding: 25px;
    margin: 25px 0;
    border-radius: 8px;
    border-left: 4px solid var(--accent-blue);
}

.task {
    background-color: var(--bg-secondary);
    padding: 20px;
    margin: 20px 0 20px 30px;
    border-radius: 8px;
    border-left: 3px solid var(--accent-green);
}

.subtask {
    background-color: var(--bg-tertiary);
    padding: 15px;
    margin: 15px 0 15px 50px;
    border-radius: 6px;
    border-left: 2px solid var(--accent-yellow);
}
.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-todo,
.TO_DO {
    background-color: rgba(255, 193, 7, 0.2);
    color: #ffc107;
}

.status-inprogress,
.IN_PROGRESS {
    background-color: rgba(33, 150, 243, 0.2);
    color: #2196f3;
}

.status-done,
.DONE {
    background-color: rgba(76, 175, 80, 0.2);
    color: #4caf50;
}
details {
    margin-top: 10px;
}

summary {
    cursor: pointer;
    color: var(--accent-blue);
    user-select: none;
    font-weight: 500;
}

summary:hover {
    color: var(--accent-blue-hover);
}

details[open] summary {
    margin-bottom: 15px;
}

details form {
    background-color: var(--bg-tertiary);
    padding: 20px;
    border-radius: 6px;
    margin-top: 10px;
}
.success-message,
div[th\:if*="success"] {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--accent-green);
    padding: 15px 20px;
    border-radius: 6px;
    border-left: 4px solid var(--accent-green);
    margin-bottom: 20px;
    font-weight: 500;
}
@media (max-width: 768px) {
    .container,
    .form-container {
        padding: 20px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 12px 8px;
    }

    .task {
        margin-left: 15px;
    }

    .subtask {
        margin-left: 30px;
    }
}
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

.hidden {
    display: none;
}