/* Handson Design System CSS Variables */
@property --clr-gradient-start {
    syntax: '<color>';
    initial-value: #4F61DF;
    inherits: true;
}

@property --clr-gradient-end {
    syntax: '<color>';
    initial-value: #9252FF;
    inherits: true;
}

:root {
    /* Modern Minimalistic Colors */
    --clr-primary-white: #FFFFFF;
    --clr-primary-medium: #6B7280;
    --clr-primary-dark: #111827;
    --clr-primary-dark-10-faded: #F9FAFB;
    --clr-primary-dark-10: #F3F4F6;
    --clr-primary-dark-5: #F8FAFC;
    --clr-primary-main: #4F61DF;
    --clr-primary-main-dark-80: #3B4CC7;
    --clr-primary-main-light-80: #6366F1;
    --clr-primary-accent: #9252FF;
    --clr-primary-accent-light-80: #A855F7;

    /* Signal Colors - Modernized */
    --clr-signal-success: #10B981;
    --clr-signal-warning: #F59E0B;
    --clr-signal-error: #EF4444;
    --clr-signal-focused: var(--clr-primary-main);

    /* Modern Typography */
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --font-family-primary: 'Inter', 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;

    --font-size-xs: 11px;
    --font-size-s: 13px;
    --font-size-m: 14px;
    --font-size-l: 16px;
    --font-size-xl: 18px;
    --font-size-xxl: 24px;

    --font-line-height-xs: 16px;
    --font-line-height-s: 20px;
    --font-line-height-m: 20px;
    --font-line-height-l: 24px;
    --font-line-height-xl: 28px;
    --font-line-height-xxl: 32px;

    /* Minimalistic Spacing System */
    --spacing-xs: 4px;
    --spacing-s: 8px;
    --spacing-m: 12px;
    --spacing-l: 16px;
    --spacing-xl: 20px;
    --spacing-xxl: 24px;
    --spacing-xxxl: 32px;
    --spacing-xxxxl: 40px;
    --spacing-xxxxxl: 48px;
    --spacing-xxxxxxl: 64px;
    --spacing-xxxxxxxl: 80px;

    /* Modern Component Heights */
    --button-height-small: 32px;
    --button-height-large: 40px;
    --chip-height: 32px;
    --input-height: 40px;

    /* Minimalistic Component Padding */
    --input-padding-vertical: 12px;
    --input-padding-horizontal: 16px;
    --button-padding: 12px 20px;
    --button-padding-large: 16px 24px;

    /* Component Margins */
    --typo-element-margin: 20px;
    --form-margin-top: 4px;
    --form-margin-left: 16px;

    /* Component Gaps */
    --form-gap: 20px;
    --form-label-gap: 14px;
    --button-gap: 8px;
    --chip-gap: 5px;
    --card-gap: 15px;
    --radio-card-gap: 10px;
    --tab-gap: 5px;
    --switch-gap: 10px;

    /* Modern Border Radius */
    --border-radius-xs: 4px;
    --border-radius-s: 6px;
    --border-radius-m: 8px;
    --border-radius-l: 12px;
    --border-radius-xl: 16px;
    --border-radius-xxl: 20px;
    --border-radius-xxxl: 24px;
    --border-radius-round: 50%;
    --border-radius-pill: 9999px;

    /* Modern Component-Specific Border Radius */
    --button-border-radius: var(--border-radius-pill);
    --button-corner-radius: var(--border-radius-m);
    --chip-corner-radius: var(--border-radius-m);
    --input-border-radius: var(--border-radius-m);
    --typo-border-radius: var(--border-radius-m);
    --card-border-radius: var(--border-radius-m);
    --card-image-border-radius: var(--border-radius-s);
    --switch-border-radius: var(--border-radius-pill);
    --radio-border-radius: var(--border-radius-m);
    --checkbox-border-radius: var(--border-radius-xs);
    --avatar-border-radius: var(--border-radius-round);
    --count-badge-border-radius: var(--border-radius-pill);

    /* Kanban-specific variables */
    --small: var(--spacing-s);
    --middle: var(--spacing-xl);
    --large: var(--spacing-xxxxxl);
    --round: var(--border-radius-pill);
    --font: var(--font-family-primary);
    --dark: var(--clr-primary-dark);
    --gradient: linear-gradient(32deg, var(--clr-primary-main), var(--clr-primary-accent));
    --light: var(--clr-primary-dark-10-faded);
    --lighter: var(--clr-primary-dark-10);
    --white: var(--clr-primary-white);
    --accent: var(--clr-primary-accent);
    --accentDarker: var(--clr-primary-main-dark-80);
    --background: var(--clr-primary-dark-5);
    --darklight: var(--clr-primary-medium);
    --hover: brightness(0.9);
    --radius: var(--border-radius-l);
    --radius-small: var(--border-radius-s);
}

/* Modern Base styles */
body * {
    font-size: var(--font-size-s);
    box-sizing: border-box;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    outline: none;
    margin: 0;
    font-weight: var(--font-weight-regular);
    -ms-overflow-style: none;
    scrollbar-width: none;
    line-height: 1.4;
}

body *::-webkit-scrollbar {
    display: none;
}

body {
    height: 100%;
    margin: 0;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    overflow: hidden;
    background: var(--clr-primary-white);
    font-family: var(--font-family-primary);
    color: var(--clr-primary-dark);
    font-weight: var(--font-weight-regular);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body > div {
    display: flex;
    flex-direction: column;
    gap: var(--small);
}

/* Modern Typography */
h1 {
    font-size: var(--font-size-m);
    margin-bottom: 0;
    font-weight: var(--font-weight-medium);
    margin-right: auto;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

h2 {
    font-size: var(--font-size-m);
    margin: var(--spacing-xs) 0;
    font-weight: var(--font-weight-medium);
    margin-right: auto;
    line-height: 1.3;
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

h2 .hawk-icon {
    flex-shrink: 0;
}

h3 {
    font-size: var(--font-size-s);
    font-weight: var(--font-weight-medium);
    line-height: 1.4;
}

p {
    opacity: 0.7;
    line-height: 1.6;
}

/* Modern Buttons */
button,
.button {
    padding: var(--spacing-s) var(--spacing-l);
    color: var(--clr-primary-white);
    background: var(--gradient);
    border: 0;
    border-radius: var(--button-border-radius);
    text-align: center;
    cursor: pointer;
    min-width: max-content;
    min-height: var(--button-height-small);
    height: max-content;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    width: max-content;
    gap: var(--spacing-xs);
    font-size: var(--font-size-s);
    letter-spacing: 0.01em;
    font-family: var(--font-family-primary);
}

button:hover,
.button:hover {
    color: var(--clr-primary-white);
    background: var(--clr-primary-main-dark-80);
}

.btn-primary {
    width: auto;
    align-items: center;
    display: flex;
    justify-content: center;
    background: var(--gradient);
    padding: var(--spacing-s) var(--spacing-l);
    color: var(--clr-primary-white);
    height: var(--button-height-small);
    border: 0;
    outline: none;
    cursor: pointer;
    border-radius: var(--button-border-radius);
    font-family: var(--font-family-primary);
    font-weight: var(--font-weight-medium);
    gap: var(--spacing-xs);
    font-size: var(--font-size-s);
    letter-spacing: 0.01em;
    min-width: max-content;
}

.btn-primary .hawk-icon {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
}

.btn-primary:hover {
    color: var(--clr-primary-white);
    background: var(--clr-primary-main-dark-80);
}

.btn-icon {
    width: var(--button-height-small);
    height: var(--button-height-small);
    background: var(--gradient);
    color: var(--clr-primary-white);
    border-radius: var(--button-border-radius);
    max-width: var(--button-height-small);
    max-height: var(--button-height-small);
    min-width: var(--button-height-small);
    display: flex;
    min-height: var(--button-height-small);
    border: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs);
    cursor: pointer;
    font-family: var(--font-family-primary);
}

.btn-icon:hover {
    color: var(--clr-primary-white);
    background: var(--clr-primary-main-dark-80);
}

.btn-icon svg {
    width: 14px;
}

/* Round buttons when they contain only one item */
/* Fallback for browsers without :has() support */
button:only-child,
.button:only-child {
    border-radius: var(--border-radius-round);
}

/* Modern browsers with :has() support */
@supports selector(:has(*)) {
    /* For buttons with only one child element (any type) */
    button:has(> *:only-child),
    .button:has(> *:only-child) {
        border-radius: var(--border-radius-round);
    }
    
    /* Specifically for buttons with only text content (like + buttons) */
    button:not(:has(img)):not(:has(svg)):not(:has(p)):not(:has(span)):not(:has(div)),
    .button:not(:has(img)):not(:has(svg)):not(:has(p)):not(:has(span)):not(:has(div)) {
        border-radius: var(--border-radius-round);
    }
}

/* Modern Navigation */
nav {
    width: 100%;
    padding: var(--spacing-l) var(--spacing-xxxxl);
    align-items: center;
    background: var(--clr-primary-white);
    border-bottom: 1px solid var(--clr-primary-dark-10);
    backdrop-filter: blur(10px);
}

/* Explicit grid placement to keep layout stable */
nav { grid-row: 1; }
.search-container { grid-row: 2; }
.canban { grid-row: 3; }

nav svg {
    width: 1.5rem;
}

/* Back Button */
.back-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--button-height-small);
    height: var(--button-height-small);
    background: var(--clr-primary-dark-10-faded);
    border: none;
    border-radius: 50%;
    text-decoration: none;
}

.back-arrow { 
    color: var(--clr-primary-dark); 
    font-size: 18px; 
    font-weight: bold; 
    line-height: 1; 
}

/* Layout */
main {
    display: grid;
    grid-template-rows: auto auto 1fr;
    position: relative;
    overflow: hidden;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

.row {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-l);
}

.canban {
    padding: 0 var(--spacing-xxxxl);
    overflow: scroll;
    background: var(--clr-primary-dark-5);
}

.mandatory {
    scroll-snap-type: x mandatory;
    overflow-x: scroll;
    -webkit-overflow-scrolling: touch;
}

.dragging .mandatory {
    overflow: hidden;
    scroll-snap-type: none;
}

.mandatory > .row > * {
    scroll-snap-align: center;
    max-width: 60ch;
    /* Keep column width stable regardless of content length */
    width: 360px;
    flex: 0 0 360px;
}

@media (max-width: 900px) {
    .mandatory > .row > * {
        width: 90vw;
        flex: 0 0 90vw;
    }
}

.dragging .canban {
    overflow: hidden;
}

/* Board container */
.boards,
.board {
    display: flex;
    border-radius: var(--card-border-radius);
}

.boards {
    flex-direction: column;
    padding: var(--spacing-l);
    gap: var(--spacing-s);
    width: auto;
    min-width: 300px;
    background: var(--clr-primary-white);
    border-radius: calc(var(--card-border-radius) + var(--spacing-l));
    border: 1px solid var(--clr-primary-dark-10);
}

.drop-zone {
    border: 1px dashed var(--clr-primary-medium);
    height: var(--spacing-xxxxxxl);
    width: calc(var(--spacing-xxxxxl) * 2);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--card-border-radius);
    background: var(--clr-primary-dark-10-faded);
}

/* Drag and Drop */
.drag {
    cursor: grab;
}

.drag:active {
    cursor: grabbing;
}

/* Disable all animations and transitions while dragging */
.dragging *,
.dragging *::before,
.dragging *::after {
    animation: none !important;
    transition: none !important;
}

/* Make dragged elements transparent and always on top */
.dragging .drag[style*="position: fixed"] {
    opacity: 0.5 !important;
    z-index: 999999 !important;
}

.dragging kanban-card[style*="position: fixed"],
.dragging kanban-column[style*="position: fixed"] {
    opacity: 0.5 !important;
    z-index: 999999 !important;
}

/* Bin */
#bin {
    position: fixed;
    bottom: var(--spacing-xxxxxl);
    right: var(--spacing-xxxxxl);
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-round);
    background: var(--clr-signal-error);
    display: none;
    background-image: url('icons/hawk/outline/icon-trash-outlined.svg');
    background-size: 32px;
    background-repeat: no-repeat;
    background-position: center center;
    border: 3px solid var(--clr-primary-white);
    z-index: 1000;
}

.dragging #bin {
    display: block;
}

/* QR Code Modal - Hidden */
#qrCodePlaceHolder { display: none; }
#qrCodePlaceHolder .modal-content { display: none; }
#qrCodePlaceHolder.active { display: none; }
#qrCode { display: none; }
#qrCode canvas, #qrCode img { display: none; }
#qrCodePlaceHolder button { display: none; }
#qrCodePlaceHolder input { display: none; }

/* Collaborators */
.collaborators {
    display: flex;
}

.user {
    width: var(--spacing-xxxxl);
    height: var(--spacing-xxxxl);
    border-radius: var(--border-radius-round);
    margin-left: calc(var(--spacing-xxxxl) * -0.5);
    background: var(--clr-primary-accent);
    border: 1px solid var(--clr-primary-white);
}

/* Container */
.container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
}

/* Hash List */
.hash-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-s);
}

.remove-button {
    background: var(--clr-signal-error);
    color: var(--clr-primary-white);
    border: none;
    cursor: pointer;
    width: var(--spacing-xxxxl);
    height: var(--spacing-xxxxl);
    min-width: var(--spacing-xxxxl);
    padding: 0;
    border-radius: var(--border-radius-s);
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-button svg {
    width: var(--font-size-xs);
}

/* Utility Classes */
.hidden {
    display: none;
}

/* Modern Search Input (general) */
input[type='search'] {
    border: 1px solid var(--clr-primary-dark-10);
    padding: var(--input-padding-vertical) var(--input-padding-horizontal);
    border-radius: var(--input-border-radius);
    text-decoration: none;
    color: var(--clr-primary-dark);
    background-color: var(--clr-primary-white);
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-search"><circle cx="11" cy="11" r="8"></circle><line x1="21" y1="21" x2="16.65" y2="16.65"></line></svg>');
    background-size: 16px;
    background-repeat: no-repeat;
    background-position: 98% 50%;
    margin: var(--spacing-l) 0;
    font-size: var(--font-size-m);
}

input[type='search']:hover {
    border-color: var(--clr-primary-main);
}

input[type='search']:focus {
    outline: none;
    border-color: var(--clr-primary-main);
}

/* HAWK Design System Icons - Standardized */
.hawk-icon {
    width: 20px;
    height: 20px;
    filter: brightness(0) saturate(100%) invert(0.35); /* Dark gray color */
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.hawk-icon:hover {
    transform: scale(1.05);
}

/* Icon colors for different contexts */
.btn-primary .hawk-icon,
.btn-icon .hawk-icon,
.scroll-button .hawk-icon {
    filter: brightness(0) saturate(100%) invert(1); /* White for buttons */
}

/* Navigation icons */
nav .hawk-icon {
    width: 20px;
    height: 20px;
    filter: brightness(0) saturate(100%) invert(0.35);
}

/* Top-right nav icon buttons: transparent until hover, dark icons */
nav .btn-icon,
nav app-button {
    background: var(--clr-primary-dark-10-faded);
    border: none;
    min-width: var(--button-height-small);
    min-height: var(--button-height-small);
    max-width: var(--button-height-small);
    max-height: var(--button-height-small);
    border-radius: 50%;
}

nav .btn-icon:hover,
nav app-button:hover { 
    background: var(--clr-primary-dark-10); 
}

/* Ensure dark icons inside nav buttons override generic white rule */
nav .btn-icon .hawk-icon,
nav app-button::part(button) img {
    filter: brightness(0) saturate(100%) invert(0.2);
    width: 18px;
    height: 18px;
}

/* Button icon sizes */
.btn-icon .hawk-icon {
    width: 16px;
    height: 16px;
}

.scroll-button .hawk-icon {
    width: 20px;
    height: 20px;
}

.remove-button .hawk-icon {
    width: 14px;
    height: 14px;
}

/* Legacy icon support */
#share img,
#qr img {
    width: 20px;
    height: 20px;
}

/* Responsive icon sizing */
@media (max-width: 768px) {
    .hawk-icon {
        width: 18px;
        height: 18px;
    }
    
    .btn-icon .hawk-icon,
    .scroll-button .hawk-icon {
        width: 14px;
        height: 14px;
    }
}

@media (max-width: 480px) {
    .hawk-icon {
        width: 16px;
        height: 16px;
    }
    
    .btn-icon .hawk-icon,
    .scroll-button .hawk-icon {
        width: 12px;
        height: 12px;
    }
}

/* Ensure icons don't break layout */
.hawk-icon {
    display: inline-block;
    vertical-align: middle;
}

/* Add Column Button Styling */
.canban .btn-icon:last-child {
    position: sticky;
    right: var(--spacing-l);
    background: var(--clr-primary-white);
    color: var(--clr-primary-dark);
    border: 1px solid var(--clr-primary-dark-10);
    border-radius: var(--button-border-radius);
    width: var(--button-height-small);
    height: var(--button-height-small);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-family: var(--font-family-primary);
    z-index: auto;
    transition: all 0.2s ease;
    margin: var(--spacing-l) auto;
}

.canban .btn-icon:last-child:hover {
    background: var(--clr-primary-white);
    border-color: var(--clr-primary-dark-20);
    transform: scale(1.05);
}

.canban .btn-icon:last-child .hawk-icon {
    filter: brightness(0) saturate(100%) invert(0.35);
    width: 16px;
    height: 16px;
}

/* Upload Progress Ring */
.upload-progress-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
}

.upload-progress-container {
    background: var(--clr-primary-white);
    border-radius: var(--border-radius-l);
    padding: var(--spacing-xxxl);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-l);
}

.progress-ring {
    position: relative;
    width: 120px;
    height: 120px;
}

.progress-ring-circle {
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}

.progress-ring-circle-bg {
    fill: none;
    stroke: var(--clr-primary-dark-10);
    stroke-width: 8;
}

.progress-ring-circle-progress {
    fill: none;
    stroke: var(--clr-primary-main);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.3s ease;
}

.progress-ring-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-xxl);
    font-weight: var(--font-weight-semibold);
    color: var(--clr-primary-dark);
}

.upload-progress-label {
    font-size: var(--font-size-l);
    font-weight: var(--font-weight-medium);
    color: var(--clr-primary-medium);
}