/* Base styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Animation utilities */
.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.2s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Tab styles */
.tab-content {
    display: none;
}

.tab-content.active {
    display: flex;
}

.tab-content.hidden {
    display: none !important;
}

.tab-button.active {
    color: #2563eb;
    border-bottom-color: #2563eb;
}

/* Message styles */
.message {
    max-width: 80%;
    margin-bottom: 1rem;
    animation: fadeIn 0.3s ease-in-out;
}

.message.user {
    align-self: flex-end;
    margin-left: auto;
}

.message.assistant {
    align-self: flex-start;
}

/* Clarification message styling */
.message-clarification {
    border-left: 4px solid #fbbf24;
    padding-left: 12px;
    background-color: rgba(251, 191, 36, 0.05);
    border-radius: 8px;
}

.message-content {
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.5;
}

.message.user .message-content {
    background-color: #2563eb;
    color: white;
}

.message.assistant .message-content {
    background-color: #f3f4f6;
    color: #1f2937;
}

.message.system {
    background-color: #fef3c7;
    color: #92400e;
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 4px solid #f59e0b;
    margin: 16px 0;
    font-weight: 500;
    text-align: center;
}

/* Main question vs Clarification distinction */
.message-assistant:not(.message-clarification) {
    /* Main questions have subtle blue accent */
    border-left: 4px solid #3b82f6;
    padding-left: 12px;
    background-color: rgba(59, 130, 246, 0.03);
    border-radius: 8px;
}

/* Loading spinner */
.spinner {
    border: 2px solid #f3f4f6;
    border-top: 2px solid #3b82f6;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* =========================================================
   Universal Button Styles
   ========================================================= */

button {
  cursor: pointer;
  min-height: 44px;
  border-radius: 10px;
  position: relative;
  transition:
    transform 0.15s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.15s cubic-bezier(0.4, 0, 0.2, 1),
    filter 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

button:disabled,
textarea:disabled,
input:disabled {
  cursor: not-allowed !important;
  pointer-events: none !important;
  opacity: 0.5 !important;
  filter: saturate(0.5) brightness(0.95) !important;
}

/* Clear / outline / neutral buttons */
button:not(:disabled):not(.tab-button):not([class*="bg-"]):not([class*="absolute"]) {
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}

button:not(:disabled):not(.tab-button):not([class*="bg-"]):hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.12);
}

button:not(:disabled):not(.tab-button):not([class*="bg-"]):active {
  transform: translateY(0.5px);
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.12);
}

/* =========================================================
   Focus states
   ========================================================= */

button:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px rgba(59,130,246,0.35),
    0 2px 6px rgba(0,0,0,0.12);
}

button[class*="bg-green"]:focus-visible {
  box-shadow:
    0 0 0 3px rgba(16,185,129,0.35),
    0 2px 6px rgba(0,0,0,0.12);
}

button[class*="bg-amber"],
button[class*="bg-orange"] {
  --focus-ring: rgba(245,158,11,0.35);
}

button[class*="bg-red"] {
  --focus-ring: rgba(239,68,68,0.35);
}

/* =========================================================
   Filled Button Surface (THE IMPORTANT PART)
   ========================================================= */

button[class*="bg-primary"],
button[class*="bg-blue"],
button[class*="bg-green"],
button[class*="bg-amber"],
button[class*="bg-orange"],
button[class*="bg-red"] {

  /* Crisp button edge (prevents card look) */
  border: 1px solid rgba(0,0,0,0.14);

  /* Calm the color slightly */
  filter: saturate(0.9);

  /* Subtle surface gradient */
  background-image: linear-gradient(
    to bottom,
    rgba(255,255,255,0.14),
    rgba(255,255,255,0.06) 40%,
    rgba(0,0,0,0.02) 100%
  );

  /* Button-like depth (NOT card depth) */
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.22),
    0 1px 2px rgba(0,0,0,0.14),
    0 6px 14px rgba(0,0,0,0.12);
}

/* =========================================================
   Hover — slight lift, more depth
   ========================================================= */

button[class*="bg-primary"]:not(:disabled):hover,
button[class*="bg-blue"]:not(:disabled):hover,
button[class*="bg-green"]:not(:disabled):hover,
button[class*="bg-amber"]:not(:disabled):hover,
button[class*="bg-orange"]:not(:disabled):hover,
button[class*="bg-red"]:not(:disabled):hover {

  transform: translateY(-1px);
  filter: brightness(1.03) saturate(0.92);

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.28),
    0 2px 4px rgba(0,0,0,0.16),
    0 10px 22px rgba(0,0,0,0.16);
}

/* =========================================================
   Active — real press-in
   ========================================================= */

button[class*="bg-primary"]:not(:disabled):active,
button[class*="bg-blue"]:not(:disabled):active,
button[class*="bg-green"]:not(:disabled):active,
button[class*="bg-amber"]:not(:disabled):active,
button[class*="bg-orange"]:not(:disabled):active,
button[class*="bg-red"]:not(:disabled):active {

  transform: translateY(1px);
  filter: brightness(0.98) saturate(0.9);

  background-image: linear-gradient(
    to bottom,
    rgba(0,0,0,0.05),
    rgba(255,255,255,0.04)
  );

  box-shadow:
    inset 0 2px 6px rgba(0,0,0,0.2),
    0 1px 2px rgba(0,0,0,0.12);
}


/* Button states */
.btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-loading {
    position: relative;
}

.btn-loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Progress bar animations */
.progress-bar {
    transition: width 0.5s ease-in-out;
}

/* Modal styles */
.modal-backdrop {
    backdrop-filter: blur(4px);
}

/* Responsive utilities */
@media (max-width: 768px) {
    .message {
        max-width: 95%;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
}