/* ============================================
   MODERN BOOTSTRAP 5 CUSTOM BUTTON STYLES
   Production-Ready HR Application
   ============================================ */

/* ----- BASE BUTTON STYLING ----- */
.btn {
    font-size: var(--ithr-body-font-size, 0.9rem); /* Inherit from body (0.9rem) */
    padding: 0.375rem 0.875rem; /* Tighter padding */
    line-height: 1.5;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    /* font-weight: 500;
    letter-spacing: 0.025em;*/
}

    /* Shine effect for all buttons */
    .btn::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient( 90deg, transparent, rgba(255, 255, 255, 0.3), transparent );
        transition: left 0.5s ease;
    }

    .btn:hover:not(:disabled):not(.disabled)::before {
        left: 100%;
    }

    /* Elevation effect on hover for all buttons */
    .btn:hover:not(:disabled):not(.disabled) {
        transform: translateY(-2px);
        box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.15) !important;
    }

    /* Active state for all buttons */
    .btn:active:not(:disabled):not(.disabled) {
        transform: translateY(0);
        box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.1) !important;
    }

    /* Focus state for accessibility */
    .btn:focus-visible {
        outline: 2px solid currentColor;
        outline-offset: 3px;
        box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25) !important;
    }

    /* Disabled state enhancement */
    .btn:disabled,
    .btn.disabled {
        opacity: 0.5;
        cursor: not-allowed;
        transform: none !important;
        box-shadow: none !important;
    }


/* ============================================
   THEMED BUTTON (Custom Brand Colors)
   ============================================ */
.btn-styled-theme {
    --theme-base: var(--mainColor, #0d6efd);
    --theme-lighter: var(--mainColorLighter, #6ea8fe);
    background: linear-gradient( 135deg, var(--theme-base) 0%, var(--theme-lighter) 100% );
    border: none;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

    .btn-styled-theme:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--theme-lighter) 0%, var(--theme-base) 100% );
        color: #fff;
    }

    .btn-styled-theme:active:not(:disabled):not(.disabled) {
        color: #fff;
    }

    .btn-styled-theme:focus-visible {
        box-shadow: 0 0 0 3px rgba(var(--theme-base), 0.25) !important;
    }


/* ============================================
   BOOTSTRAP PRIMARY BUTTON
   ============================================ */
.btn-primary {
    --primary-base: #0d6efd; /* Fallback */
    --primary-base: var(--bs-primary, #0d6efd);
    --primary-lighter: #6ea8fe; /* Fallback for older browsers */
    --primary-lighter: color-mix(in srgb, var(--primary-base) 70%, white);
    background: linear-gradient( 135deg, var(--primary-base) 0%, var(--primary-lighter) 100% );
    border-color: var(--primary-base);
}

    .btn-primary:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--primary-lighter) 0%, var(--primary-base) 100% );
        border-color: var(--primary-base);
    }


/* ============================================
   BOOTSTRAP SECONDARY BUTTON
   ============================================ */
.btn-secondary {
    --secondary-base: #6c757d;
    --secondary-base: var(--bs-secondary, #6c757d);
    --secondary-lighter: #adb5bd;
    --secondary-lighter: color-mix(in srgb, var(--secondary-base) 70%, white);
    background: linear-gradient( 135deg, var(--secondary-base) 0%, var(--secondary-lighter) 100% );
    border-color: var(--secondary-base);
}

    .btn-secondary:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--secondary-lighter) 0%, var(--secondary-base) 100% );
        border-color: var(--secondary-base);
    }


/* ============================================
   BOOTSTRAP SUCCESS BUTTON
   ============================================ */
.btn-success {
    --success-base: #198754;
    --success-base: var(--bs-success, #198754);
    --success-lighter: #75b798;
    --success-lighter: color-mix(in srgb, var(--success-base) 70%, white);
    background: linear-gradient( 135deg, var(--success-base) 0%, var(--success-lighter) 100% );
    border-color: var(--success-base);
}

    .btn-success:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--success-lighter) 0%, var(--success-base) 100% );
        border-color: var(--success-base);
    }


/* ============================================
   BOOTSTRAP DANGER BUTTON
   ============================================ */
.btn-danger {
    --danger-base: #dc3545;
    --danger-base: var(--bs-danger, #dc3545);
    --danger-lighter: #ea868f;
    --danger-lighter: color-mix(in srgb, var(--danger-base) 70%, white);
    background: linear-gradient( 135deg, var(--danger-base) 0%, var(--danger-lighter) 100% );
    border-color: var(--danger-base);
}

    .btn-danger:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--danger-lighter) 0%, var(--danger-base) 100% );
        border-color: var(--danger-base);
    }


/* ============================================
   BOOTSTRAP WARNING BUTTON
   ============================================ */
.btn-warning {
    --warning-base: #ffc107;
    --warning-base: var(--bs-warning, #ffc107);
    --warning-lighter: #ffda6a;
    --warning-lighter: color-mix(in srgb, var(--warning-base) 70%, white);
    background: linear-gradient( 135deg, var(--warning-base) 0%, var(--warning-lighter) 100% );
    border-color: var(--warning-base);
    color: #000;
}

    .btn-warning:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--warning-lighter) 0%, var(--warning-base) 100% );
        border-color: var(--warning-base);
        color: #000;
    }


/* ============================================
   BOOTSTRAP INFO BUTTON
   ============================================ */
.btn-info {
    --info-base: #0dcaf0;
    --info-base: var(--bs-info, #0dcaf0);
    --info-lighter: #6edff6;
    --info-lighter: color-mix(in srgb, var(--info-base) 70%, white);
    background: linear-gradient( 135deg, var(--info-base) 0%, var(--info-lighter) 100% );
    border-color: var(--info-base);
    color: #000;
}

    .btn-info:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--info-lighter) 0%, var(--info-base) 100% );
        border-color: var(--info-base);
        color: #000;
    }


/* ============================================
   BOOTSTRAP LIGHT BUTTON
   ============================================ */
.btn-light {
    --light-base: #f8f9fa;
    --light-base: var(--bs-light, #f8f9fa);
    --light-lighter: #ffffff;
    background: linear-gradient( 135deg, var(--light-base) 0%, var(--light-lighter) 100% );
    border-color: #dee2e6;
    color: #212529;
}

    .btn-light:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--light-lighter) 0%, var(--light-base) 100% );
        border-color: #dee2e6;
        color: #212529;
    }


/* ============================================
   BOOTSTRAP DARK BUTTON
   ============================================ */
.btn-dark {
    --dark-base: #212529;
    --dark-base: var(--bs-dark, #212529);
    --dark-lighter: #6c757d;
    --dark-lighter: color-mix(in srgb, var(--dark-base) 70%, white);
    background: linear-gradient( 135deg, var(--dark-base) 0%, var(--dark-lighter) 100% );
    border-color: var(--dark-base);
}

    .btn-dark:hover:not(:disabled):not(.disabled) {
        background: linear-gradient( 135deg, var(--dark-lighter) 0%, var(--dark-base) 100% );
        border-color: var(--dark-base);
    }


/* ============================================
   OUTLINE BUTTON ENHANCEMENTS
   ============================================ */
.btn-outline-primary:hover:not(:disabled):not(.disabled),
.btn-outline-secondary:hover:not(:disabled):not(.disabled),
.btn-outline-success:hover:not(:disabled):not(.disabled),
.btn-outline-danger:hover:not(:disabled):not(.disabled),
.btn-outline-warning:hover:not(:disabled):not(.disabled),
.btn-outline-info:hover:not(:disabled):not(.disabled),
.btn-outline-light:hover:not(:disabled):not(.disabled),
.btn-outline-dark:hover:not(:disabled):not(.disabled) {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.15) !important;
}


/* ============================================
   BUTTON SIZE ENHANCEMENTS
   ============================================ */
.btn-sm {
    font-size: 0.8rem;
    padding: 0.25rem 0.625rem;
}

.btn-lg {
    font-size: 1rem;
    padding: 0.5rem 1.125rem;
    font-weight: 600;
}


/* ============================================
   BUTTON GROUP ENHANCEMENTS
   ============================================ */
.btn-group .btn:hover:not(:disabled):not(.disabled) {
    z-index: 2;
}


/* ============================================
   ICON BUTTON ENHANCEMENT
   ============================================ */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

    .btn-icon i,
    .btn-icon svg {
        width: 1rem;
        height: 1rem;
    }


/* ============================================
   ACCESSIBILITY - REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .btn,
    .btn::before {
        transition: none;
    }

        .btn:hover:not(:disabled):not(.disabled) {
            transform: none;
        }

        .btn:active:not(:disabled):not(.disabled) {
            transform: none;
        }
}


/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .btn {
        box-shadow: none !important;
        text-shadow: none !important;
    }

        .btn::before {
            display: none;
        }
}