/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn:focus-visible {
    outline: 2px solid var(--fitness-teal);
    outline-offset: 2px;
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--text-xs);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--text-base);
}

.btn-block {
    width: 100%;
}

/* Primary Buttons - Platform Colors */
.btn-primary {
    background: linear-gradient(135deg, var(--fitness-teal), var(--fitness-teal-hover));
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(0, 150, 136, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 150, 136, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-soulmate {
    background: linear-gradient(135deg, var(--soulmate-red), var(--soulmate-red-hover));
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(229, 57, 53, 0.3);
}

.btn-soulmate:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(229, 57, 53, 0.4);
}

.btn-creator {
    background: linear-gradient(135deg, var(--creator-orange), var(--creator-orange-hover));
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.3);
}

.btn-creator:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 152, 0, 0.4);
}

.btn-ai {
    background: linear-gradient(135deg, var(--ai-gold), var(--ai-gold-hover));
    color: var(--bg-dark);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-ai:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
}

.btn-professional {
    background: linear-gradient(135deg, var(--professional-yellow), var(--professional-yellow-hover));
    color: var(--bg-dark);
    box-shadow: 0 4px 15px rgba(255, 235, 59, 0.3);
}

.btn-professional:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 235, 59, 0.4);
}

.btn-fitness {
    background: linear-gradient(135deg, var(--fitness-teal), var(--fitness-teal-hover));
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(0, 150, 136, 0.3);
}

.btn-fitness:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 150, 136, 0.4);
}

/* Secondary/Outline Buttons */
.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.btn-outline-soulmate {
    background: transparent;
    color: var(--soulmate-red);
    border: 1px solid var(--soulmate-red);
}

.btn-outline-soulmate:hover {
    background: var(--soulmate-red-light);
}

.btn-outline-creator {
    background: transparent;
    color: var(--creator-orange);
    border: 1px solid var(--creator-orange);
}

.btn-outline-creator:hover {
    background: var(--creator-orange-light);
}

.btn-outline-fitness {
    background: transparent;
    color: var(--fitness-teal);
    border: 1px solid var(--fitness-teal);
}

.btn-outline-fitness:hover {
    background: var(--fitness-teal-light);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--text-gray);
    padding: 0.5rem;
}

.btn-ghost:hover {
    color: var(--text-white);
    background: var(--bg-hover);
}

/* Icon Button */
.btn-icon {
    padding: 0.75rem;
    border-radius: var(--radius-full);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

/* Loading State */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ==================== FORM INPUTS ==================== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.form-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-gray);
}

.form-label.required::after {
    content: ' *';
    color: var(--error);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-white);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
    border-color: var(--border-hover);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--fitness-teal);
    box-shadow: 0 0 0 3px rgba(0, 150, 136, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-dim);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--error);
}

.form-input.error:focus,
.form-textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-input.success,
.form-textarea.success {
    border-color: var(--success);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px;
    padding-right: 2.5rem;
}

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

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

/* Input with Icon */
.input-group {
    position: relative;
}

.input-group .form-input {
    padding-left: 2.75rem;
}

.input-group-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    pointer-events: none;
}

.input-group-icon svg {
    width: 18px;
    height: 18px;
}

/* Input with Button */
.input-group-append {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
}

/* Password Toggle */
.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    padding: 0.25rem;
    transition: color var(--transition-fast);
}

.password-toggle:hover {
    color: var(--text-white);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.form-check-input {
    width: 18px;
    height: 18px;
    accent-color: var(--fitness-teal);
    cursor: pointer;
}

.form-check-label {
    font-size: var(--text-sm);
    color: var(--text-gray);
    user-select: none;
}

/* ==================== CARDS ==================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-default);
}

.card-body {
    padding: var(--space-lg);
}

.card-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-default);
    background: var(--bg-section);
}

.card-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: var(--space-sm);
}

.card-subtitle {
    font-size: var(--text-sm);
    color: var(--text-dim);
}

/* Card Variants */
.card-soulmate {
    border-color: var(--soulmate-red);
    box-shadow: 0 0 20px rgba(229, 57, 53, 0.1);
}

.card-creator {
    border-color: var(--creator-orange);
    box-shadow: 0 0 20px rgba(255, 152, 0, 0.1);
}

.card-fitness {
    border-color: var(--fitness-teal);
    box-shadow: 0 0 20px rgba(0, 150, 136, 0.1);
}

/* ==================== MODALS ==================== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

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

.modal-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-white);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-white);
    background: var(--bg-hover);
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-lg);
    border-top: 1px solid var(--border-default);
    background: var(--bg-section);
}

/* ==================== TOAST NOTIFICATIONS ==================== */
.toast-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 300px;
    max-width: 450px;
    pointer-events: auto;
    animation: slideInRight var(--transition-normal) ease-out;
}

.toast-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: var(--space-xs);
}

.toast-message {
    font-size: var(--text-sm);
    color: var(--text-gray);
}

.toast-close {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    padding: var(--space-xs);
    margin: calc(var(--space-xs) * -1);
    transition: color var(--transition-fast);
}

.toast-close:hover {
    color: var(--text-white);
}

/* Toast Variants */
.toast-success {
    border-left: 4px solid var(--success);
}

.toast-success .toast-icon {
    color: var(--success);
}

.toast-error {
    border-left: 4px solid var(--error);
}

.toast-error .toast-icon {
    color: var(--error);
}

.toast-warning {
    border-left: 4px solid var(--warning);
}

.toast-warning .toast-icon {
    color: var(--warning);
}

.toast-info {
    border-left: 4px solid var(--info);
}

.toast-info .toast-icon {
    color: var(--info);
}

/* Toast Exit Animation */
.toast.exiting {
    animation: slideOutRight var(--transition-normal) ease-in forwards;
}

@keyframes slideOutRight {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* ==================== BADGES ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.75rem;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: var(--fitness-teal-light);
    color: var(--fitness-teal);
}

.badge-soulmate {
    background: var(--soulmate-red-light);
    color: var(--soulmate-red);
}

.badge-creator {
    background: var(--creator-orange-light);
    color: var(--creator-orange);
}

.badge-ai {
    background: var(--ai-gold-light);
    color: var(--ai-gold);
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-error {
    background: var(--error-light);
    color: var(--error);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

/* ==================== AVATARS ==================== */
.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    overflow: hidden;
    background: var(--bg-input);
    color: var(--text-dim);
    font-weight: 600;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-xs { width: 24px; height: 24px; font-size: var(--text-xs); }
.avatar-sm { width: 32px; height: 32px; font-size: var(--text-sm); }
.avatar-md { width: 40px; height: 40px; font-size: var(--text-base); }
.avatar-lg { width: 48px; height: 48px; font-size: var(--text-lg); }
.avatar-xl { width: 64px; height: 64px; font-size: var(--text-xl); }
.avatar-2xl { width: 96px; height: 96px; font-size: var(--text-2xl); }

.avatar-group {
    display: flex;
}

.avatar-group .avatar {
    border: 2px solid var(--bg-dark);
    margin-left: -8px;
}

.avatar-group .avatar:first-child {
    margin-left: 0;
}

/* ==================== DROPDOWNS ==================== */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-fast);
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.dropdown-menu-right {
    left: auto;
    right: 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    color: var(--text-gray);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--text-white);
}

.dropdown-item:first-child {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-default);
    margin: var(--space-xs) 0;
}

/* ==================== TABS ==================== */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-default);
    gap: var(--space-xs);
}

.tab {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-dim);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

.tab:hover {
    color: var(--text-white);
}

.tab.active {
    color: var(--fitness-teal);
    border-bottom-color: var(--fitness-teal);
}

.tab-content {
    padding: var(--space-lg) 0;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn var(--transition-fast) ease-out;
}

/* ==================== PROGRESS BAR ==================== */
.progress {
    height: 8px;
    background: var(--bg-input);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--fitness-teal), var(--fitness-teal-hover));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow) ease-out;
}

.progress-bar-soulmate {
    background: linear-gradient(90deg, var(--soulmate-red), var(--soulmate-red-hover));
}

.progress-bar-creator {
    background: linear-gradient(90deg, var(--creator-orange), var(--creator-orange-hover));
}

/* ==================== SPINNER ==================== */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-default);
    border-top-color: var(--fitness-teal);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 4px;
}

/* ==================== DIVIDERS ==================== */
.divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-default);
}

.divider-text {
    font-size: var(--text-sm);
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==================== TOOLTIPS ==================== */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--text-white);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
    z-index: var(--z-popover);
    margin-bottom: 8px;
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}