/* ============================================
   YunMail Base Styles
   ============================================ */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--text-link);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-hover); }

img { max-width: 100%; height: auto; display: block; }

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

input, textarea, select {
    outline: none;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 10px 20px;
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    line-height: 1;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 1px 2px rgba(37,99,235,0.3);
}
.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
    box-shadow: 0 2px 8px rgba(37,99,235,0.35);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-xs);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover:not(:disabled) {
    background: var(--color-gray-100);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--color-danger);
    color: var(--color-white);
}
.btn-danger:hover:not(:disabled) {
    background: #b91c1c;
}

.btn-sm {
    padding: 6px 12px;
    font-size: var(--text-xs);
}

.btn-lg {
    padding: 14px 28px;
    font-size: var(--text-md);
    border-radius: var(--radius-lg);
}

.btn-xl {
    padding: 16px 36px;
    font-size: var(--text-lg);
    border-radius: var(--radius-lg);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* ---- Form Controls ---- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--color-white);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}
.form-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-input::placeholder {
    color: var(--text-tertiary);
}
.form-input-error {
    border-color: var(--color-danger);
}
.form-input-error:focus {
    box-shadow: 0 0 0 3px rgba(220,38,38,0.1);
}

.form-hint {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--color-danger);
}

textarea.form-input {
    resize: vertical;
    min-height: 100px;
}

/* ---- Utility ---- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-narrow {
    max-width: 480px;
}

.container-wide {
    max-width: 1400px;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.flex-1 { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-wrap { flex-wrap: wrap; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-lg { font-size: var(--text-lg); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.font-medium { font-weight: var(--weight-medium); }
.font-semibold { font-weight: var(--weight-semibold); }
.font-bold { font-weight: var(--weight-bold); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hidden { display: none !important; }
.relative { position: relative; }
.w-full { width: 100%; }

/* ---- Badge ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: var(--weight-semibold);
    line-height: 1.4;
    border-radius: var(--radius-full);
}
.badge-primary {
    background: var(--color-primary-light);
    color: var(--color-primary);
}
.badge-success {
    background: var(--color-success-light);
    color: var(--color-success);
}
.badge-warning {
    background: var(--color-warning-light);
    color: var(--color-warning);
}
.badge-danger {
    background: var(--color-danger-light);
    color: var(--color-danger);
}
.badge-gray {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

/* ---- Avatar ---- */
.avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-white);
    flex-shrink: 0;
    text-transform: uppercase;
}

.avatar-sm { width: 28px; height: 28px; font-size: var(--text-xs); }
.avatar-lg { width: 40px; height: 40px; font-size: var(--text-md); }

/* ---- Dropdown ---- */
.dropdown {
    position: relative;
    display: inline-flex;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    min-width: 180px;
    background: var(--color-white);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-1);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all var(--transition-fast);
}
.dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    padding: 8px 12px;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    text-align: left;
}
.dropdown-item:hover {
    background: var(--color-gray-50);
    color: var(--text-primary);
}
.dropdown-item.active {
    background: var(--color-primary-50);
    color: var(--color-primary);
}
.dropdown-divider {
    height: 1px;
    background: var(--border-light);
    margin: var(--space-1) 0;
}

/* ---- Toast / Notification ---- */
.toast-container {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 12px 16px;
    background: var(--color-gray-900);
    color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    font-size: var(--text-sm);
    animation: toastIn 0.3s ease;
    max-width: 380px;
}
.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-danger); }
.toast-warning { border-left: 3px solid var(--color-warning); }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}
.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-height: 90vh;
    overflow: auto;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}
.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border-light);
}

.modal-title {
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-light);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
    .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
    .hide-desktop { display: none !important; }
}