styles.css

/*
 * HN Daily - Complete Style System
 * Self-contained CSS (no external dependencies)
 */

/* ===== CSS Reset (Tailwind Preflight) ===== */
*,
::before,
::after {
    box-sizing: border-box;
    border-width: 0;
    border-style: solid;
    border-color: #3D4350;
}

::before,
::after {
    --tw-content: '';
}

html {
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    -moz-tab-size: 4;
    tab-size: 4;
    font-family: 'Inter', system-ui, sans-serif;
    font-feature-settings: normal;
    font-variation-settings: normal;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    line-height: inherit;
}

hr {
    height: 0;
    color: inherit;
    border-top-width: 1px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: inherit;
    font-weight: inherit;
}

a {
    color: inherit;
    text-decoration: inherit;
}

b,
strong {
    font-weight: bolder;
}

code,
kbd,
samp,
pre {
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: 1em;
}

small {
    font-size: 80%;
}

sub,
sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

sub {
    bottom: -0.25em;
}

sup {
    top: -0.5em;
}

table {
    text-indent: 0;
    border-color: inherit;
    border-collapse: collapse;
}

button,
input,
optgroup,
select,
textarea {
    font-family: inherit;
    font-feature-settings: inherit;
    font-variation-settings: inherit;
    font-size: 100%;
    font-weight: inherit;
    line-height: inherit;
    color: inherit;
    margin: 0;
    padding: 0;
}

button,
select {
    text-transform: none;
}

button,
[type='button'],
[type='reset'],
[type='submit'] {
    -webkit-appearance: button;
    background-color: transparent;
    background-image: none;
}

:-moz-focusring {
    outline: auto;
}

:-moz-ui-invalid {
    box-shadow: none;
}

progress {
    vertical-align: baseline;
}

::-webkit-inner-spin-button,
::-webkit-outer-spin-button {
    height: auto;
}

[type='search'] {
    -webkit-appearance: textfield;
    outline-offset: -2px;
}

::-webkit-search-decoration {
    -webkit-appearance: none;
}

::-webkit-file-upload-button {
    -webkit-appearance: button;
    font: inherit;
}

summary {
    display: list-item;
}

blockquote,
dl,
dd,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
figure,
p,
pre {
    margin: 0;
}

fieldset {
    margin: 0;
    padding: 0;
}

legend {
    padding: 0;
}

ol,
ul,
menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

dialog {
    padding: 0;
}

textarea {
    resize: vertical;
}

input::placeholder,
textarea::placeholder {
    opacity: 1;
    color: #525866;
}

button,
[role="button"] {
    cursor: pointer;
}

:disabled {
    cursor: default;
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
    display: block;
    vertical-align: middle;
}

img,
video {
    max-width: 100%;
    height: auto;
}

[hidden] {
    display: none;
}

/* ===== Custom Properties ===== */
/* ===== Custom Properties ===== */
:root {
    --bg-primary: #0D1117;
    /* Deep navies/black */
    --bg-secondary: #161B22;
    /* Card bg */
    --bg-tertiary: #21262D;
    /* Borders/Hover */
    --border-color: #30363D;

    --accent: #FFFFFF;
    /* Primary white accent */
    --accent-secondary: #238636;
    /* Success green */
    --orange: #F9826C;
    /* Muted orange */

    --text-primary: #F0F6FC;
    --text-secondary: #8B949E;
    --text-tertiary: #6E7681;

    --success: #238636;
    --error: #DA3633;
}

/* ===== Base Styles ===== */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Layout Utilities ===== */
.flex {
    display: flex;
}

.hidden {
    display: none;
}

.block {
    display: block;
}

.inline-flex {
    display: inline-flex;
}

.grid {
    display: grid;
}

.flex-col {
    flex-direction: column;
}

.flex-1 {
    flex: 1 1 0%;
}

.shrink-0 {
    flex-shrink: 0;
}

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-3 {
    gap: 0.75rem;
}

.gap-4 {
    gap: 1rem;
}

.h-4 {
    height: 1rem;
}

.h-5 {
    height: 1.25rem;
}

.h-6 {
    height: 1.5rem;
}

.h-10 {
    height: 2.5rem;
}

.h-11 {
    height: 2.75rem;
}

.h-16 {
    height: 4rem;
}

.h-screen {
    height: 100vh;
}

.w-3 {
    width: 0.75rem;
}

.w-4 {
    width: 1rem;
}

.w-5 {
    width: 1.25rem;
}

.w-6 {
    width: 1.5rem;
}

.w-10 {
    width: 2.5rem;
}

.w-12 {
    width: 3rem;
}

.w-16 {
    width: 4rem;
}

.w-20 {
    width: 5rem;
}

.w-24 {
    width: 6rem;
}

.w-32 {
    width: 8rem;
}

.w-full {
    width: 100%;
}

.min-w-0 {
    min-width: 0;
}

.max-w-2xl {
    max-width: 42rem;
}

.p-1 {
    padding: 0.25rem;
}

.p-2 {
    padding: 0.5rem;
}

.p-3 {
    padding: 0.75rem;
}

.p-4 {
    padding: 1rem;
}

.px-2 {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

.px-3 {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

.px-4 {
    padding-left: 1rem;
    padding-right: 1rem;
}

.px-6 {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.py-0\.5 {
    padding-top: 0.125rem;
    padding-bottom: 0.125rem;
}

.py-2 {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.py-2\.5 {
    padding-top: 0.625rem;
    padding-bottom: 0.625rem;
}

.py-3 {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

.py-4 {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.py-8 {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.py-20 {
    padding-top: 5rem;
    padding-bottom: 5rem;
}

.pl-12 {
    padding-left: 3rem;
}

.pr-4 {
    padding-right: 1rem;
}

.pt-16 {
    padding-top: 4rem;
}

.m-0 {
    margin: 0;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 0.75rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.ml-4 {
    margin-left: 1rem;
}

.ml-auto {
    margin-left: auto;
}

.mt-12 {
    margin-top: 3rem;
}

.mt-16 {
    margin-top: 4rem;
}

.my-4 {
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.space-y-1>*+* {
    margin-top: 0.25rem;
}

.space-y-3>*+* {
    margin-top: 0.75rem;
}

/* ===== Positioning ===== */
.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.fixed {
    position: fixed;
}

.sticky {
    position: sticky;
}

.top-0 {
    top: 0;
}

.left-0 {
    left: 0;
}

.left-4 {
    left: 1rem;
}

.right-6 {
    right: 1.5rem;
}

.bottom-6 {
    bottom: 1.5rem;
}

.inset-0 {
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}

.z-10 {
    z-index: 10;
}

.z-20 {
    z-index: 20;
}

.z-50 {
    z-index: 50;
}

/* ===== Typography ===== */
.text-xs {
    font-size: 0.75rem;
    line-height: 1rem;
}

.text-sm {
    font-size: 0.875rem;
    line-height: 1.25rem;
}

.text-lg {
    font-size: 1.125rem;
    line-height: 1.75rem;
}

.text-xl {
    font-size: 1.25rem;
    line-height: 1.75rem;
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.font-bold {
    font-weight: 700;
}

.antialiased {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Colors ===== */
.bg-hn-bg {
    background-color: #0E1217;
}

.bg-hn-surface {
    background-color: #1C1F26;
}

.bg-hn-surface-hover {
    background-color: #282C34;
}

.bg-transparent {
    background-color: transparent;
}

.text-hn-text {
    color: #FFFFFF;
}

.text-hn-text-secondary {
    color: #A8B3CF;
}

.text-hn-text-tertiary {
    color: #525866;
}

.text-hn-accent {
    color: #CE3DF3;
}

.text-hn-orange {
    color: #FF6600;
}

.text-white {
    color: #FFFFFF;
}

.border-hn-border {
    border-color: #3D4350;
}

.border-hn-accent {
    border-color: #CE3DF3;
}

/* ===== Borders ===== */
.border {
    border-width: 1px;
}

.border-b {
    border-bottom-width: 1px;
}

.border-r {
    border-right-width: 1px;
}

.border-t {
    border-top-width: 1px;
}

.rounded-md {
    border-radius: 0.375rem;
}

.rounded-lg {
    border-radius: 0.5rem;
}

.rounded-xl {
    border-radius: 0.75rem;
}

.rounded-full {
    border-radius: 9999px;
}

/* ===== Effects ===== */
.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

.overflow-y-auto {
    overflow-y: auto;
}

.opacity-0 {
    opacity: 0;
}

.shadow-lg {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

/* ===== Transitions ===== */
.transition-all {
    transition-property: all;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.transition-colors {
    transition-property: color, background-color, border-color;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.duration-200 {
    transition-duration: 200ms;
}

.duration-300 {
    transition-duration: 300ms;
}

/* ===== Transforms ===== */
.-translate-y-1\/2 {
    transform: translateY(-50%);
}

.translate-y-0 {
    transform: translateY(0);
}

/* ===== Interactivity ===== */
.cursor-pointer {
    cursor: pointer;
}

.focus\:outline-none:focus {
    outline: none;
}

.focus\:border-hn-accent:focus {
    border-color: #CE3DF3;
}

.focus\:ring-2:focus {
    box-shadow: 0 0 0 2px rgba(206, 61, 243, 0.2);
}

/* ===== Hover States ===== */
.hover\:bg-hn-surface-hover:hover {
    background-color: #282C34;
}

.hover\:border-hn-accent:hover {
    border-color: #CE3DF3;
}

.hover\:text-hn-orange:hover {
    color: #FF6600;
}

.hover\:text-white:hover {
    color: #FFFFFF;
}

/* ===== Grid ===== */
.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

/* ===== Gradient ===== */
.bg-gradient-to-br {
    background-image: linear-gradient(to bottom right, var(--tw-gradient-stops));
}

.from-hn-accent {
    --tw-gradient-from: #CE3DF3;
    --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, transparent);
}

.to-purple-600 {
    --tw-gradient-to: #9333EA;
}

.bg-gradient-to-r {
    background-image: linear-gradient(to right, var(--tw-gradient-stops));
}

.to-purple-400 {
    --tw-gradient-to: #C084FC;
}

.bg-clip-text {
    background-clip: text;
    -webkit-background-clip: text;
}

.text-transparent {
    color: transparent;
}

/* ===== Backdrop ===== */
.backdrop-blur-xl {
    backdrop-filter: blur(24px);
}

.bg-opacity-80 {
    --tw-bg-opacity: 0.8;
}

/* ===== Responsive ===== */
@media (min-width: 640px) {
    .sm\:flex {
        display: flex;
    }
}

@media (min-width: 768px) {
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .lg\:w-64 {
        width: 16rem;
    }

    .lg\:block {
        display: block;
    }

    .lg\:hidden {
        display: none;
    }

    .lg\:flex {
        display: flex;
    }

    .lg\:justify-start {
        justify-content: flex-start;
    }

    .lg\:px-4 {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .lg\:px-6 {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .lg\:p-6 {
        padding: 1.5rem;
    }

    .lg\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 1280px) {
    .xl\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #1C1F26;
}

::-webkit-scrollbar-thumb {
    background: #3D4350;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #525866;
}

/* ===== Navigation Items ===== */
.nav-item {
    color: #A8B3CF;
}

.nav-item:hover {
    background-color: #282C34;
    color: #FFFFFF;
}

.nav-item.active {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.nav-item.active svg {
    color: var(--text-primary);
}

/* ===== View Toggle ===== */
.view-toggle {
    color: #525866;
}

.view-toggle:hover {
    color: #A8B3CF;
}

.view-toggle.active {
    background-color: #282C34;
    color: #FFFFFF;
}

/* ===== Story Card ===== */
.story-card {
    background: #1C1F26;
    border: 1px solid #3D4350;
    border-radius: 16px;
    padding: 0;
    /* Remove padding to let cover hit edges */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.story-card:hover {
    border-color: var(--text-secondary);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.card-cover {
    height: 100px;
    width: 100%;
    /* Gradient handled inline */
}

.card-content {
    padding: 16px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.story-card .source-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
}

.story-card .read-time {
    font-size: 11px;
    color: var(--text-tertiary);
    font-weight: 500;
}

.story-card .title {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.5;
    color: #FFFFFF;
    margin: 0 0 16px 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s ease;
    flex: 1;
    /* Push footer down */
}

.story-card:hover .title {
    color: var(--text-primary);
    text-decoration: underline;
    text-decoration-color: var(--text-secondary);
}

.meta-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.meta-stats {
    display: flex;
    align-items: center;
    gap: 12px;
}

.story-card .meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--text-secondary);
}

.story-card .meta-item svg {
    width: 14px;
    height: 14px;
    color: var(--text-tertiary);
}

.story-card .bookmark-btn {
    color: var(--text-secondary);
    padding: 6px;
    border-radius: 8px;
    transition: all 0.2s;
}

.story-card .bookmark-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent);
}

.story-card .bookmark-btn.bookmarked {
    color: var(--accent-secondary);
    fill: var(--accent-secondary);
}

/* ===== Story List Item ===== */
.story-list-item {
    background: #1C1F26;
    border: 1px solid #3D4350;
    border-radius: 12px;
    padding: 16px 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.story-list-item:hover {
    background: #282C34;
    border-color: #525866;
}

.story-list-item .rank {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(206, 61, 243, 0.15), rgba(168, 85, 247, 0.1));
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    color: #CE3DF3;
    flex-shrink: 0;
}

.story-list-item .content {
    flex: 1;
    min-width: 0;
}

.story-list-item .title {
    font-size: 15px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 6px;
    transition: color 0.2s ease;
}

.story-list-item:hover .title {
    color: #CE3DF3;
}

.story-list-item .meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: #A8B3CF;
}

.story-list-item .meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.story-list-item .meta-item svg {
    width: 14px;
    height: 14px;
    color: #525866;
}

/* ===== Loading Skeleton ===== */
.skeleton {
    background: linear-gradient(90deg, #1C1F26 0%, #282C34 50%, #1C1F26 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

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

    100% {
        background-position: -200% 0;
    }
}

.skeleton-card {
    background: #1C1F26;
    border: 1px solid #3D4350;
    border-radius: 16px;
    padding: 20px;
}

/* ===== Toast ===== */
.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: #1C1F26;
    border: 1px solid #3D4350;
    border-radius: 12px;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.3s ease;
    min-width: 280px;
}

.toast.success {
    border-color: #10B981;
}

.toast.success .toast-icon {
    color: #10B981;
}

.toast.error {
    border-color: #EF4444;
}

.toast.error .toast-icon {
    color: #EF4444;
}

.toast.info {
    border-color: #CE3DF3;
}

.toast.info .toast-icon {
    color: #CE3DF3;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }

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

/* ===== Refresh Animation ===== */
.refresh-spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ===== Score Badge ===== */
.score-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: linear-gradient(135deg, rgba(255, 102, 0, 0.15), rgba(255, 102, 0, 0.05));
    border: 1px solid rgba(255, 102, 0, 0.2);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    color: #FF6600;
}

.score-badge svg {
    width: 12px;
    height: 12px;
}

/* ===== Focus States ===== */
button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid #CE3DF3;
    outline-offset: 2px;
}

/* ===== Smooth scroll ===== */
html {
    scroll-behavior: smooth;
}

/* ===== Selection ===== */
::selection {
    background: rgba(206, 61, 243, 0.3);
    color: #FFFFFF;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .story-card {
        padding: 16px;
    }

    .story-card .title {
        font-size: 14px;
        -webkit-line-clamp: 2;
    }

    .story-card .meta {
        flex-wrap: wrap;
    }
}

/* ===== Placeholder Color ===== */
.placeholder-hn-text-tertiary::placeholder {
    color: #525866;
}

/* ===== Sidebar transition ===== */
aside {
    transition: width 0.3s ease;
}

/* ===== Header background opacity ===== */
header {
    background-color: rgba(28, 31, 38, 0.8);
}

/* ===== Empty state styles ===== */
#empty-state.flex {
    display: flex;
}

/* ===== 3/4 width utility ===== */
.w-3\/4 {
    width: 75%;
}