/* EventFlow V1.2 - Global Base Stylesheet */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #1a56db;
    --primary-hover: #1e429f;
    --secondary-color: #4b5563;
    --success-color: #0e9f6e;
    --warning-color: #d97706;
    --danger-color: #e02424;
    --info-color: #3f83f8;
    --light-bg: #f9fafb;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --text-main: #111827;
    --text-muted: #6b7280;
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-main);
    background-color: var(--light-bg);
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-main);
}
h1 { font-size: 1.875rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
p { margin-bottom: 0.75rem; }
a { color: var(--primary-color); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Grid & Layout Utilities */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
.container-fluid { width: 100%; padding: 0 1.5rem; }
.row { display: flex; flex-wrap: wrap; margin-left: -0.75rem; margin-right: -0.75rem; }
[class*="col-"] { padding-left: 0.75rem; padding-right: 0.75rem; flex: 1 0 0%; width: 100%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }

@media (min-width: 768px) {
    .col-md-1 { flex: 0 0 8.333%; max-width: 8.333%; }
    .col-md-2 { flex: 0 0 16.666%; max-width: 16.666%; }
    .col-md-3 { flex: 0 0 25%; max-width: 25%; }
    .col-md-4 { flex: 0 0 33.333%; max-width: 33.333%; }
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-8 { flex: 0 0 66.666%; max-width: 66.666%; }
}

@media (min-width: 1024px) {
    .col-lg-5 { flex: 0 0 41.666%; max-width: 41.666%; }
    .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
    .col-lg-7 { flex: 0 0 58.333%; max-width: 58.333%; }
}

.d-flex { display: flex; }
.d-inline { display: inline-block; }
.d-none, .hidden { display: none !important; }
.flex-column { flex-direction: column; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.justify-content-end { justify-content: flex-end; }
.justify-content-around { justify-content: space-around; }
.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.align-items-end { align-items: flex-end; }
.flex-grow-1 { flex-grow: 1; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--danger-color); }
.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-primary { color: var(--primary-color); }
.text-white { color: #fff; }
.font-weight-bold { font-weight: 700; }
.small { font-size: 0.85rem; }
.italic { font-style: italic; }
.uppercase { text-transform: uppercase; }

/* Spacing */
.m-0 { margin: 0; }
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 1rem; }
.ml-1 { margin-left: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.p-0 { padding: 0 !important; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 2.5rem; }
.pt-3 { padding-top: 1rem; }
.pb-3 { padding-bottom: 1rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-md { max-width: 480px; }

/* Cards & Surfaces */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.card-title {
    font-size: 1.15rem;
    font-weight: 700;
}
.border { border: 1px solid var(--border-color); }
.border-top { border-top: 1px solid var(--border-color); }
.border-bottom { border-bottom: 1px solid var(--border-color); }
.border-danger { border-color: var(--danger-color) !important; }
.border-2 { border-width: 2px !important; }
.rounded { border-radius: var(--radius-md); }
.bg-light { background-color: var(--light-bg); }
.bg-white { background-color: #fff; }
.bg-dark { background-color: #1f2937; }

/* Forms & Inputs */
.form-group {
    margin-bottom: 1rem;
}
.form-label {
    display: inline-block;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}
.form-control {
    display: block;
    width: 100%;
    padding: 0.6rem 0.85rem;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-main);
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.form-control:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.2);
}
.form-control-sm {
    padding: 0.35rem 0.6rem;
    font-size: 0.85rem;
}
.form-control-lg {
    padding: 0.8rem 1rem;
    font-size: 1.1rem;
    min-height: 48px;
}
.input-group {
    display: flex;
    width: 100%;
}
.input-group-text {
    display: flex;
    align-items: center;
    padding: 0.6rem 0.85rem;
    font-size: 0.95rem;
    color: var(--text-muted);
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    border-right: 0;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}
.input-group .form-control {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.form-check-input {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--primary-color);
    cursor: pointer;
}
.form-check-label {
    cursor: pointer;
    font-size: 0.95rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.55rem 1rem;
    font-size: 0.9rem;
    line-height: 1.5;
    border-radius: var(--radius-sm);
    transition: all 0.15s ease-in-out;
    text-decoration: none !important;
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}
.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}
.btn-secondary {
    background-color: #6b7280;
    border-color: #6b7280;
    color: #fff;
}
.btn-secondary:hover:not(:disabled) {
    background-color: #4b5563;
    border-color: #4b5563;
}
.btn-success {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: #fff;
}
.btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
    color: #fff;
}
.btn-warning {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
    color: #fff;
}
.btn-outline-primary {
    background-color: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
}
.btn-outline-primary:hover:not(:disabled) {
    background-color: var(--primary-color);
    color: #fff;
}
.btn-outline-secondary {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-main);
}
.btn-outline-secondary:hover:not(:disabled) {
    background-color: var(--light-bg);
}
.btn-outline-danger {
    background-color: transparent;
    border-color: var(--danger-color);
    color: var(--danger-color);
}
.btn-outline-danger:hover:not(:disabled) {
    background-color: var(--danger-color);
    color: #fff;
}
.btn-block {
    display: block;
    width: 100%;
}
.btn-sm {
    padding: 0.3rem 0.65rem;
    font-size: 0.8rem;
}
.btn-xs {
    padding: 0.15rem 0.45rem;
    font-size: 0.75rem;
}
.btn-lg {
    padding: 0.8rem 1.5rem;
    font-size: 1.1rem;
    min-height: 48px;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--radius-sm);
}
.badge-primary { background-color: #ebf5ff; color: var(--primary-color); }
.badge-success { background-color: #def7ec; color: #03543f; }
.badge-warning { background-color: #fef3c7; color: #92400e; }
.badge-danger { background-color: #fde8e8; color: #9b1c1c; }
.badge-info { background-color: #e1effe; color: #1e429f; }
.badge-secondary { background-color: #f3f4f6; color: #4b5563; }
.badge-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-muted); }

/* Tables */
.table-responsive { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table { width: 100%; border-collapse: collapse; text-align: left; }
.table th, .table td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--border-color); vertical-align: middle; }
.table th { background-color: var(--light-bg); font-weight: 700; font-size: 0.8rem; text-transform: uppercase; color: var(--text-muted); letter-spacing: 0.05em; }
.table-sm th, .table-sm td { padding: 0.45rem 0.65rem; font-size: 0.85rem; }
.table tbody tr:hover { background-color: rgba(0, 0, 0, 0.015); }

/* Alerts */
.alert {
    position: relative;
    padding: 0.85rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
}
.alert-danger { color: #9b1c1c; background-color: #fde8e8; border-color: #f8b4b4; }
.alert-success { color: #03543f; background-color: #def7ec; border-color: #84e1bc; }
.alert-warning { color: #92400e; background-color: #fef3c7; border-color: #fcd34d; }
.alert-info { color: #1e429f; background-color: #e1effe; border-color: #a4cafe; }
.alert-dismissible { padding-right: 3rem; }
.alert-close {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    background: transparent;
    border: 0;
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    color: inherit;
    opacity: 0.6;
}
.alert-close:hover { opacity: 1; }

/* Progress Bars */
.progress-bar-container {
    width: 100%;
    height: 10px;
    background-color: var(--border-color);
    border-radius: 9999px;
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    transition: width 0.4s ease;
}
.bg-primary { background-color: var(--primary-color); }
.bg-success { background-color: var(--success-color); }
.bg-warning { background-color: var(--warning-color); }
.bg-danger { background-color: var(--danger-color); }

/* List Groups */
.list-group { list-style: none; border-radius: var(--radius-sm); border: 1px solid var(--border-color); }
.list-group-item { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border-color); }
.list-group-item:last-child { border-bottom: 0; }

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    padding: 1rem;
}
.modal-dialog {
    background: #fff;
    border-radius: var(--radius-md);
    width: 100%;
    max-width: 550px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    overflow-y: auto;
}
.modal-lg { max-width: 800px; }
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}
.modal-title { font-size: 1.2rem; margin: 0; }
.modal-close {
    background: transparent;
    border: 0;
    font-size: 1.75rem;
    cursor: pointer;
    line-height: 1;
    color: var(--text-muted);
}
.modal-body { padding: 1.5rem; flex-grow: 1; overflow-y: auto; }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--light-bg);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.toast {
    min-width: 280px;
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    color: #fff;
    font-size: 0.9rem;
    animation: slideInToast 0.25s ease-out;
}
.toast-success { background-color: var(--success-color); }
.toast-error { background-color: var(--danger-color); }
.toast-info { background-color: var(--info-color); }
@keyframes slideInToast {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}