/* ── Fonts ──────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Variables ──────────────────────────────────────────────────────────── */
:root {
    --op-navy:    #0f172a;
    --op-primary: #2563eb;
    --op-primary-dark: #1d4ed8;
    --op-surface: #f8fafc;
    --op-border:  #e2e8f0;
    --op-text:    #1e293b;
    --op-muted:   #64748b;
    --op-radius:  0.625rem;
    --op-shadow:  0 1px 3px 0 rgb(0 0 0 / .08), 0 1px 2px -1px rgb(0 0 0 / .06);
    --op-shadow-md: 0 4px 6px -1px rgb(0 0 0 / .07), 0 2px 4px -2px rgb(0 0 0 / .05);
}

/* ── Base ───────────────────────────────────────────────────────────────── */
html {
    font-size: 15px;
    height: 100%;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--op-surface);
    color: var(--op-text);
    min-height: 100%;
    display: flex;
    flex-direction: column;
    margin: 0;
}

main {
    flex: 1;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* ── Navbar ─────────────────────────────────────────────────────────────── */
.op-navbar {
    background-color: var(--op-navy);
    padding: 0;
    border-bottom: 1px solid rgba(255,255,255,.06);
}

.op-navbar .navbar-brand {
    color: #fff;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    padding: 0.9rem 0;
}

.op-navbar .navbar-brand:hover { color: #93c5fd; }

.op-navbar .nav-link {
    color: rgba(255,255,255,.7) !important;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.9rem 0.85rem !important;
    transition: color .15s;
}

.op-navbar .nav-link:hover,
.op-navbar .nav-link.active {
    color: #fff !important;
}

.op-navbar .navbar-toggler {
    border-color: rgba(255,255,255,.6);
    padding: 0.35rem 0.6rem;
    background-color: rgba(255,255,255,.1);
}

.op-navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255%2c255%2c255%2c1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.op-navbar .dropdown-menu {
    border: 1px solid var(--op-border);
    box-shadow: var(--op-shadow-md);
    border-radius: var(--op-radius);
    font-size: 0.875rem;
    padding: 0.35rem;
}

.op-navbar .dropdown-item {
    border-radius: 0.375rem;
    padding: 0.45rem 0.75rem;
    color: var(--op-text);
}

.op-navbar .dropdown-item:hover { background-color: var(--op-surface); }

/* ── Cards ──────────────────────────────────────────────────────────────── */
.card {
    border: 1px solid var(--op-border);
    border-radius: var(--op-radius);
    box-shadow: var(--op-shadow);
    background: #fff;
}

.card-header {
    background: #fff;
    border-bottom: 1px solid var(--op-border);
    padding: 1rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--op-text);
    border-radius: calc(var(--op-radius) - 1px) calc(var(--op-radius) - 1px) 0 0 !important;
}

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn {
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: 0.5rem;
    letter-spacing: 0.01em;
    transition: all .15s;
}

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

.btn-primary:hover {
    background-color: var(--op-primary-dark);
    border-color: var(--op-primary-dark);
}

.btn-lg { padding: 0.65rem 1.5rem; font-size: 0.9375rem; }

/* ── Forms ──────────────────────────────────────────────────────────────── */
.form-control, .form-select {
    border-color: var(--op-border);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    padding: 0.55rem 0.8rem;
    color: var(--op-text);
    transition: border-color .15s, box-shadow .15s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--op-primary);
    box-shadow: 0 0 0 3px rgb(37 99 235 / .12);
}

.form-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--op-text);
    margin-bottom: 0.35rem;
}

.input-group .btn { border-radius: 0.5rem; }
.input-group .form-control:not(:last-child) { border-radius: 0.5rem 0 0 0.5rem; }
.input-group .btn:last-child { border-radius: 0 0.5rem 0.5rem 0; }

/* ── Badges & Alerts ────────────────────────────────────────────────────── */
.badge { font-weight: 500; letter-spacing: 0.01em; }

.alert {
    border-radius: var(--op-radius);
    font-size: 0.875rem;
    border: none;
}

.alert-danger  { background: #fef2f2; color: #991b1b; }
.alert-success { background: #f0fdf4; color: #166534; }
.alert-warning { background: #fffbeb; color: #92400e; }
.alert-info    { background: #eff6ff; color: #1e40af; }

/* ── Tables ─────────────────────────────────────────────────────────────── */
.table { font-size: 0.875rem; }
.table th { font-weight: 600; color: var(--op-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.table-light { --bs-table-bg: #f8fafc; }

/* ── Footer ─────────────────────────────────────────────────────────────── */
.op-footer {
    background-color: var(--op-navy);
    color: rgba(255,255,255,.45);
    font-size: 0.8rem;
    padding: 1rem 0;
    margin-top: auto;
}

.op-footer a { color: rgba(255,255,255,.55); text-decoration: none; }
.op-footer a:hover { color: rgba(255,255,255,.85); }

/* ── Divider text ───────────────────────────────────────────────────────── */
.divider-text {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--op-muted);
    font-size: 0.8rem;
}
.divider-text::before, .divider-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--op-border);
}

/* ── Stepper ────────────────────────────────────────────────────────────── */
.stepper { display: flex; align-items: flex-start; }

.stepper-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    cursor: pointer;
}

.stepper-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 19px;
    left: 50%;
    width: 100%;
    height: 2px;
    background-color: var(--op-border);
    z-index: 0;
    transition: background-color 0.3s;
}

.stepper-item.completed:not(:last-child)::after { background-color: #16a34a; }

.stepper-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #f1f5f9;
    color: var(--op-muted);
    border: 2px solid var(--op-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    position: relative;
    z-index: 1;
    transition: background-color .25s, color .25s, border-color .25s;
    user-select: none;
}

.stepper-item.active .stepper-circle  { background-color: var(--op-primary); color: #fff; border-color: var(--op-primary); }
.stepper-item.completed .stepper-circle { background-color: #16a34a; color: #fff; border-color: #16a34a; }

.stepper-label {
    margin-top: 6px;
    font-size: 0.72rem;
    color: var(--op-muted);
    text-align: center;
    max-width: 90px;
    line-height: 1.2;
    transition: color .25s;
    font-weight: 500;
}

.stepper-item.active .stepper-label    { color: var(--op-primary); font-weight: 600; }
.stepper-item.completed .stepper-label { color: #16a34a; }

/* ── Step panels ────────────────────────────────────────────────────────── */
.step-panel { display: none; }
.step-panel.active { display: block; }

/* ── Misc ───────────────────────────────────────────────────────────────── */
.text-muted { color: var(--op-muted) !important; }

.shadow-sm { box-shadow: var(--op-shadow) !important; }