/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
    white-space: nowrap;
    line-height: 1.4;
}
.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    box-shadow: var(--shadow-primary);
}
.btn-outline {
    background: var(--color-bg);
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}
.btn-outline:hover {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-text-tertiary);
}
.btn-danger { background: var(--color-negative); color: #fff; }
.btn-danger:hover { background: #DC2626; }
.btn-sm { padding: 5px 10px; font-size: 0.78rem; }
.btn-icon { padding: 8px; }

/* Cards */
.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.card-header {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.card-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.88rem;
    letter-spacing: -0.01em;
}
.card-body { padding: var(--space-lg); }

/* KPI Tiles */
.kpi-tile {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}
.kpi-label {
    font-family: var(--font-family);
    font-size: 0.7rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}
.kpi-value {
    font-family: var(--font-family);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}
.kpi-value.positive { color: var(--color-positive); }
.kpi-value.negative { color: var(--color-negative); }

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-family: var(--font-display);
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.badge-lead { background: #F3F4F6; color: #4B5563; }
.badge-negotiating { background: #FFF7ED; color: #C2410C; }
.badge-signed { background: #EFF6FF; color: #1D4ED8; }
.badge-consignment { background: #F0FDFA; color: #0F766E; }
.badge-fullypaid { background: #F5F3FF; color: #6D28D9; }
.badge-settled { background: #F1F5F9; color: #475569; }

/* Form */
.form-group { margin-bottom: var(--space-md); }
.form-label {
    display: block;
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}
.form-input {
    width: 100%;
    padding: 9px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    font-family: var(--font-family);
    font-size: 0.85rem;
    transition: all var(--duration-fast) var(--ease-out);
    color: var(--color-text);
}
.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.form-input.input-field {
    background: var(--color-input-bg);
    color: var(--color-input-text);
    font-weight: 500;
}
.form-input.calc-field {
    background: var(--color-calc-bg);
    color: var(--color-text-secondary);
    cursor: not-allowed;
}
.form-input-error { border-color: var(--color-negative); }
.form-error {
    color: var(--color-negative);
    font-size: 0.73rem;
    margin-top: var(--space-xs);
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}
@media (max-width: 640px) {
    .form-row { grid-template-columns: 1fr; }
}

/* Tooltip */
.tooltip-trigger {
    position: relative;
    cursor: help;
    border-bottom: 1px dashed var(--color-text-tertiary);
}
.tooltip-content {
    display: none;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary-dark);
    color: #fff;
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-size: 0.72rem;
    white-space: nowrap;
    z-index: 50;
    margin-bottom: 6px;
    box-shadow: var(--shadow-md);
}
.tooltip-trigger:hover .tooltip-content { display: block; }

/* Slide-over (used on deal-detail page) */
.slide-over {
    background: var(--color-bg);
    width: 100%;
    max-width: 640px;
    height: 100vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    padding: var(--space-xl);
}
.slide-over-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
}
.slide-over-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.01em;
}
.slide-over-close {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--color-text-tertiary);
    padding: var(--space-xs);
    transition: color var(--duration-fast);
}
.slide-over-close:hover { color: var(--color-text); }

/* Alert */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-size: 0.82rem;
    margin-bottom: var(--space-md);
}
.alert-error {
    background: var(--color-negative-bg);
    color: var(--color-negative);
    border: 1px solid #FECACA;
}
.alert-success {
    background: var(--color-positive-bg);
    color: #047857;
    border: 1px solid #A7F3D0;
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    color: var(--color-text-tertiary);
    font-family: var(--font-display);
}
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: var(--space-sm);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Focus-visible for keyboard accessibility */
.btn:focus-visible,
.view-btn:focus-visible,
.modal-close:focus-visible,
.slide-over-close:focus-visible,
.form-input:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}
a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ── Mobile Enhancements ── */
@media (max-width: 640px) {
    /* Prevent iOS zoom on input focus — must be ≥ 16px */
    .form-input {
        font-size: 16px;
        padding: 10px 12px;
    }
    .form-label { font-size: 0.72rem; margin-bottom: 4px; }
    .form-group { margin-bottom: var(--space-sm); }

    /* Form rows: single column */
    .form-row { grid-template-columns: 1fr; gap: var(--space-sm); }

    /* Touch-friendly buttons (44px min tap target) */
    .btn { padding: 10px 16px; min-height: 44px; }
    .btn-sm { padding: 8px 12px; min-height: 36px; }

    /* Badges: slightly larger for readability */
    .badge { font-size: 0.65rem; padding: 4px 8px; }

    /* Cards: tighter padding */
    .card-body { padding: var(--space-md); }
    .card-header { padding: var(--space-sm) var(--space-md); }

    /* KPI tiles: compact */
    .kpi-tile { padding: var(--space-md); }
    .kpi-value { font-size: 1.2rem; }

    /* Slide-over: full-width on mobile */
    .slide-over {
        max-width: 100%;
        padding: var(--space-md);
    }
    .slide-over-title { font-size: 1rem; }

    /* Alerts: compact */
    .alert { padding: var(--space-sm) var(--space-md); font-size: 0.78rem; }
}