:root {
    --primary-color: #3b82f6;
    --font-family-main: 'Cairo', sans-serif;
}
body {
	margin: 0;
    font-family: var(--font-family-main);
    scroll-behavior: smooth;
    background-color: #f3f4f6;
	display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.main-container {
    width: 100%;
    max-width: 90rem; /* 1440px */
    margin-left: auto;
    margin-right: auto;
    padding: 1.5rem; /* 24px */
    margin-top: 2rem;
    margin-bottom: 2rem;
}
.header-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom-width: 2px;
    padding-bottom: 1rem;
}
.main-title {
    font-size: 2.25rem; /* 36px */
    font-weight: 800;
    color: #1f2937;
}
.actions-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.action-button {
    color: white;
    font-weight: 700;
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}
.back-button {
    margin-bottom: 1.5rem;
    background-color: #e5e7eb;
    color: #1f2937;
    font-weight: 700;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
}
.back-button:hover { background-color: #d1d5db; }
.footer-container {
    margin-top: 3rem;
    text-align: center;
    border-top-width: 1px;
    padding-top: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}
.settings-button {
    color: #6b7280;
    font-size: 1.5rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
}
.settings-button:hover { color: var(--primary-color); }
.logout-button {
    background-color: #ef4444;
    color: white;
    font-weight: 700;
    font-size: 0.875rem;
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
}
.logout-button:hover { background-color: #dc2626; }

.component-card {
    background-color: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}
.component-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: #111827;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}
.sub-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #374151;
    margin-bottom: 1rem;
}
.counter-btn {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 9999px;
    font-weight: 800;
    font-size: 1.5rem;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease-in-out;
    border: none;
    cursor: pointer;
}
.increment-btn { background-color: #dbeafe; color: #2563eb; }
.increment-btn:hover { background-color: #bfdbfe; }
.decrement-btn { background-color: #fee2e2; color: #dc2626; }
.decrement-btn:hover { background-color: #fecaca; }

.screen { display: none; }
.auth-box {
    background: #ffffff; padding: 2rem; border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    text-align: center; width: 90%; max-width: 400px;
}
.auth-box .logo { font-size: 2rem; color: var(--primary-color); margin-bottom: 1.5rem; font-weight: 800; }
.auth-box form { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1rem; }
.auth-box form h3 { color: var(--primary-color); margin-bottom: 0.5rem; text-align: left; font-weight: 700; }
.auth-box input { width: 100%; padding: 0.75rem; border: 1px solid #d1d5db; border-radius: 0.5rem; font-size: 1rem; }
.auth-box button { width: 100%; padding: 0.75rem; background-color: var(--primary-color); color: #fff; border: none; border-radius: 0.5rem; font-weight: bold; cursor: pointer; font-size: 1.1rem; }
.auth-box button:hover { background-color: #2563eb; }
.form-msg { margin-top: 0.5rem; font-size: 0.9rem; color: #dc2626; min-height: 20px; }
.auth-toggle-link { margin-top: 1rem; font-size: 0.9rem; color: #6b7280; }
.auth-toggle-link a { color: var(--primary-color); font-weight: bold; text-decoration: none; cursor: pointer; }
.auth-toggle-link a:hover { text-decoration: underline; }
.reset-info { font-size: 0.9rem; color: #6b7280; margin-bottom: 1rem; line-height: 1.5; }

.class-card {
    background-color: #ffffff;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    border-left: 5px solid var(--primary-color);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.class-card:hover { transform: translateY(-4px); box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }
.class-card-title { font-size: 1.5rem; font-weight: 800; color: #1f2937; margin-bottom: 0.25rem; }
.class-card-info { display: flex; align-items: center; gap: 0.5rem; color: #6b7280; font-weight: 600; }
.level-badge { display: inline-block; background-color: #e5e7eb; color: #4b5563; padding: 0.25rem 0.75rem; font-size: 0.75rem; font-weight: 700; border-radius: 9999px; margin-bottom: 0.75rem; text-transform: uppercase; }
.student-item {
    background-color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 700;
}
.student-item:hover { transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,0,0,0.1); }
.student-score.has-score { font-weight: bold; color: #1d4ed8; background-color: #e0e7ff; padding: 0.2rem 0.6rem; border-radius: 99px; }
.history-item { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem; background-color: #f9fafb; border-radius: 0.5rem; border: 1px solid #e5e7eb; }

.card-actions, .item-actions { display: flex; gap: 0.75rem; align-items: center; }
.action-btn { background-color: #f3f4f6; border: none; border-radius: 9999px; width: 2rem; height: 2rem; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s ease-in-out; color: #6b7280; }
.action-btn i { pointer-events: none; }
.action-btn:hover { color: #1f2937; }
.edit-btn:hover { background-color: #dbeafe; }
.delete-btn:hover { background-color: #fee2e2; }

.stats-card { color: white; padding: 1.5rem; border-radius: 0.75rem; box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1); text-align: center; }
.stats-title { font-size: 1.125rem; font-weight: 600; opacity: 0.9; }
.stats-value { font-size: 2.25rem; font-weight: 800; margin-top: 0.5rem; }

.report-header { text-align: center; margin-bottom: 1rem; border-bottom: 2px solid black; padding-bottom: 0.5rem; }
.report-table { min-width: 100%; font-size: 0.875rem; text-align: center; border-collapse: collapse; border: 1px solid black; }

.install-button {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 3.5rem;
    height: 3.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 9999px;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    cursor: pointer;
    z-index: 1000;
    transition: transform 0.2s ease-in-out;
}
.install-button:hover { transform: scale(1.1); background-color: #2563eb; }

/* --- Quick Entry Table --- */
#quick-entry-table-body td { padding: 0.25rem; vertical-align: middle; }
#quick-entry-table-body input,
#quick-entry-table-body select {
    width: 100%;
    max-width: 80px;
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    text-align: center;
    font-size: 0.875rem;
    -moz-appearance: textfield; /* Firefox */
}
#quick-entry-table-body input::-webkit-outer-spin-button,
#quick-entry-table-body input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
#quick-entry-table-body input:focus,
#quick-entry-table-body select:focus {
    outline: 2px solid var(--primary-color);
    border-color: transparent;
}
#quick-entry-table-body .student-name-cell {
    font-weight: 700;
    text-align: left;
    padding-left: 1rem;
    min-width: 150px;
}
#quick-entry-table-body .final-score-cell {
    font-weight: 800;
    font-size: 1.125rem;
    color: var(--primary-color);
    min-width: 60px;
}

/* --- Modal Styles --- */
.modal-hidden {
    display: none;
}
.modal-box {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 500px;
    background-color: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    z-index: 50;
}
#modal-overlay {
    position: fixed;
    inset: 0;
    background-color: black;
    opacity: 0.5;
    z-index: 40;
}
#modal-body .input-group {
    margin-bottom: 1rem;
}
#modal-body label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}
#modal-body input,
#modal-body select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .main-container { padding: 1rem; margin-top: 1rem; margin-bottom: 1rem; }
    .main-title { font-size: 1.875rem; }
    .header-container { flex-direction: column; align-items: stretch; text-align: center; }
    .actions-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .action-button { font-size: 0.875rem; padding: 0.75rem 0.5rem; }
    .student-item { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
    .item-actions { width: 100%; justify-content: space-between; }
}
@media print {
    body * { visibility: hidden; }
    #report-preview-screen, #report-preview-screen * { visibility: visible; }
    #report-preview-screen { position: absolute; left: 0; top: 0; width: 100%; }
    .no-print { display: none !important; }
    .report-table { font-size: 10px; }
    .report-table th, .report-table td { padding: 4px; }
}

/* --- Footer Credit Styles --- */
.app-footer {
    text-align: center;
    padding: 1.5rem;
    background-color: #f3f4f6; /* نفس لون خلفية الصفحة */
    color: #6b7280; /* لون رمادي متناسق */
    font-size: 0.875rem; /* حجم خط مناسب */
    font-weight: 600;
    border-top: 1px solid #e5e7eb; /* خط علوي للفصل */
    width: 100%;
}


#auth-screen, #activation-screen {
    display: flex;
    align-items: center;       /* للتوسيط العمودي */
    justify-content: center;  /* للتوسيط الأفقي */
    min-height: 100vh;        /* لجعل ارتفاع الحاوية يملأ الشاشة */
    width: 100%;
}
#app-root {
    flex: 1;
}

/* --- Tooltip Styles --- */
.tooltip-trigger {
    position: relative;
    display: inline-block;
    cursor: help;
}

.tooltip-text {
    visibility: hidden;
    width: 280px;
    background-color: #2d3748; /* gray-800 */
    color: #fff;
    text-align: right;
    direction: rtl;
    border-radius: 6px;
    padding: 8px 12px;
    position: absolute;
    z-index: 10;
    bottom: 140%; /* Position above the icon */
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-weight: normal; /* Override bold from title */
    font-size: 0.875rem; /* 14px */
    line-height: 1.5;
    pointer-events: none; /* So the tooltip itself doesn't block hover events */
}

/* Tooltip Arrow */
.tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #2d3748 transparent transparent transparent;
}

/* Show the tooltip on hover */
.tooltip-trigger:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}