frontend/src/styles/mixins.scss

// SAAP SCSS Mixins

// === RESPONSIVE MIXINS ===
@mixin respond-to($breakpoint) {
  $breakpoints: (
    'sm': 640px,
    'md': 768px,
    'lg': 1024px,
    'xl': 1280px,
    '2xl': 1536px
  );
  
  @if map-has-key($breakpoints, $breakpoint) {
    @media (min-width: map-get($breakpoints, $breakpoint)) {
      @content;
    }
  } @else {
    @warn "Breakpoint #{$breakpoint} not found in $breakpoints map";
  }
}

// === FLEX MIXINS ===
@mixin flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

@mixin flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@mixin flex-col-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

// === BUTTON MIXINS ===
@mixin button-base {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--saap-space-2);
  padding: var(--saap-space-3) var(--saap-space-6);
  border: none;
  border-radius: var(--saap-border-radius);
  font-family: var(--saap-font-family);
  font-size: var(--saap-text-base);
  font-weight: var(--saap-font-semibold);
  line-height: 1;
  cursor: pointer;
  transition: var(--saap-transition);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  
  &:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
  }
  
  &:focus {
    outline: 2px solid var(--saap-primary-400);
    outline-offset: 2px;
  }
}

@mixin button-primary {
  @include button-base;
  background: var(--saap-primary-600);
  color: white;
  box-shadow: var(--saap-shadow-sm);
  
  &:hover:not(:disabled) {
    background: var(--saap-primary-800);
    transform: translateY(-2px);
    box-shadow: var(--saap-shadow-md);
  }
  
  &:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--saap-shadow-sm);
  }
}

@mixin button-secondary {
  @include button-base;
  background: white;
  color: var(--saap-neutral-700);
  border: 1px solid var(--saap-neutral-300);
  
  &:hover:not(:disabled) {
    background: var(--saap-neutral-50);
    border-color: var(--saap-neutral-400);
    color: var(--saap-neutral-900);
  }
}

@mixin button-ghost {
  @include button-base;
  background: transparent;
  color: var(--saap-neutral-600);
  
  &:hover:not(:disabled) {
    background: var(--saap-neutral-100);
    color: var(--saap-neutral-800);
  }
}

// === CARD MIXINS ===
@mixin card-base {
  background: white;
  border-radius: var(--saap-border-radius-lg);
  box-shadow: var(--saap-shadow-sm);
  border: 1px solid var(--saap-neutral-200);
  transition: var(--saap-transition);
}

@mixin card-hover {
  &:hover {
    border-color: var(--saap-primary-300);
    box-shadow: var(--saap-shadow-md);
    transform: translateY(-2px);
  }
}

// === INPUT MIXINS ===
@mixin input-base {
  width: 100%;
  padding: var(--saap-space-3) var(--saap-space-4);
  border: 1px solid var(--saap-neutral-300);
  border-radius: var(--saap-border-radius);
  background: white;
  font-size: var(--saap-text-base);
  color: var(--saap-neutral-800);
  transition: var(--saap-transition-fast);
  
  &::placeholder {
    color: var(--saap-neutral-500);
  }
  
  &:focus {
    outline: none;
    border-color: var(--saap-primary-400);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  }
  
  &:disabled {
    background: var(--saap-neutral-100);
    cursor: not-allowed;
    opacity: 0.6;
  }
  
  &.error {
    border-color: var(--saap-error);
    
    &:focus {
      border-color: var(--saap-error);
      box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
    }
  }
}

// === BADGE MIXINS ===
@mixin badge-base {
  display: inline-flex;
  align-items: center;
  gap: var(--saap-space-1);
  padding: var(--saap-space-1) var(--saap-space-3);
  border-radius: var(--saap-border-radius-full);
  font-size: var(--saap-text-xs);
  font-weight: var(--saap-font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}

@mixin badge-success {
  @include badge-base;
  background: var(--saap-success);
  color: white;
}

@mixin badge-warning {
  @include badge-base;
  background: var(--saap-warning);
  color: white;
}

@mixin badge-error {
  @include badge-base;
  background: var(--saap-error);
  color: white;
}

@mixin badge-info {
  @include badge-base;
  background: var(--saap-info);
  color: white;
}

// === ANIMATION MIXINS ===
@mixin loading-shimmer {
  background: linear-gradient(
    90deg,
    var(--saap-neutral-200) 25%,
    var(--saap-neutral-100) 50%,
    var(--saap-neutral-200) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

// === TRUNCATE TEXT ===
@mixin truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@mixin truncate-lines($lines: 2) {
  display: -webkit-box;
  -webkit-line-clamp: $lines;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

// === GLASSMORPHISM ===
@mixin glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

// === GRADIENT TEXT ===
@mixin gradient-text($gradient) {
  background: $gradient;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

// === VISUALLY HIDDEN ===
@mixin visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}