/**
 * Buy Me a Coffee - Main Stylesheet
 * Design inspired by buymeacoffee.com with vibrant yellow theme
 */

/* ============================================================================
   RESET & BASE STYLES
   ============================================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Brand Colors */
    --color-primary: #FFDD00;
    --color-primary-dark: #E6C700;
    --color-primary-light: #FFF5CC;

    /* Neutral Colors */
    --color-black: #1A1A1A;
    --color-white: #FFFFFF;
    --color-bg-light: #F4F4F7;
    --color-bg-lighter: #FAFAFA;
    --color-gray: #6B7280;
    --color-gray-light: #D1D5DB;
    --color-gray-dark: #4B5563;

    /* Semantic Colors */
    --color-success: #10B981;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-black);
    background-color: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-sm);
}

/* ============================================================================
   LAYOUT
   ============================================================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-sm {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-2xl) 0;
}

.section-hero {
    padding: var(--spacing-xl) 0 var(--spacing-2xl);
    background: linear-gradient(135deg, var(--color-bg-lighter) 0%, var(--color-bg-light) 100%);
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-black);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-icon {
    padding: var(--spacing-sm);
    border-radius: var(--radius-full);
}

/* Coffee icon buttons */
.btn-coffee {
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-light);
    color: var(--color-black);
    padding: var(--spacing-md);
    min-width: 120px;
}

.btn-coffee:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.btn-coffee.active {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

/* ============================================================================
   CARDS
   ============================================================================ */

.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-base);
}

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

.card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-light);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

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

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--color-black);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray);
}

/* Currency selector */
.currency-toggle {
    display: inline-flex;
    gap: 0;
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.currency-toggle input[type="radio"] {
    display: none;
}

.currency-toggle label {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-light);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 600;
}

.currency-toggle input:checked+label {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-black);
}

/* ============================================================================
   DONATION WIDGET
   ============================================================================ */

.donation-widget {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    margin: 0 auto;
}

.coffee-amounts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.coffee-amount-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    background: var(--color-white);
    border: 2px solid var(--color-gray-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.coffee-amount-btn:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.coffee-amount-btn.active {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.coffee-icon {
    font-size: var(--font-size-3xl);
}

.amount-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.amount-input-wrapper {
    flex: 1;
    position: relative;
}

.amount-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    border: 3px solid var(--color-primary);
    border-radius: var(--radius-md);
}

.currency-symbol {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-gray);
}

.conversion-display {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    text-align: center;
    margin-top: var(--spacing-xs);
}

/* ============================================================================
   GOAL PROGRESS WIDGET
   ============================================================================ */

.goal-widget {
    background: linear-gradient(135deg, #FFE5B4 0%, #FFD700 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.goal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.goal-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-black);
    margin: 0;
}

.goal-percentage {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-black);
}

.progress-bar {
    height: 12px;
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #10B981 0%, #059669 100%);
    border-radius: var(--radius-full);
    transition: width 1s ease-out;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.goal-amounts {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
}

.goal-amounts strong {
    font-weight: 700;
    color: var(--color-black);
}

/* ============================================================================
   TOP DONATORS WIDGET
   ============================================================================ */

.top-donators-widget {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.widget-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.widget-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
}

.coffee-svg {
    width: 60px;
    height: 60px;
}

.donators-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.donator-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-lighter);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.donator-item:hover {
    background: var(--color-primary-light);
    transform: translateX(5px);
}

.donator-rank {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: var(--color-black);
    font-weight: 700;
    font-size: var(--font-size-lg);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.donator-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-white);
    flex-shrink: 0;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg,
            var(--color-primary) 0%,
            #FFE866 50%,
            var(--color-primary) 100%);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section {
    animation: fadeInUp 0.6s ease-out backwards;
}

.footer-section:nth-child(1) {
    animation-delay: 0.1s;
}

.footer-section:nth-child(2) {
    animation-delay: 0.2s;
}

.footer-section:nth-child(3) {
    animation-delay: 0.3s;
}

.footer-section:nth-child(4) {
    animation-delay: 0.4s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.footer-section h3 {
    font-size: var(--font-size-xl);
    margin: 0 0 var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), #FFE866);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section h4 {
    font-size: var(--font-size-md);
    margin: 0 0 var(--spacing-md);
    font-weight: 700;
    color: var(--color-white);
    position: relative;
    padding-bottom: var(--spacing-xs);
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: width var(--transition-base);
}

.footer-section:hover h4::after {
    width: 60px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-gray);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) 0;
    position: relative;
    font-size: var(--font-size-sm);
}

.footer-links a::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: var(--spacing-xs);
}

.footer-links a:hover::before {
    width: 100%;
}

/* Newsletter Form Styling */
.footer-newsletter-wrapper {
    background: rgba(255, 221, 0, 0.05);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 221, 0, 0.1);
    transition: all var(--transition-base);
}

.footer-newsletter-wrapper:hover {
    background: rgba(255, 221, 0, 0.08);
    border-color: rgba(255, 221, 0, 0.2);
    transform: translateY(-2px);
}

.footer-newsletter-form {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.footer-newsletter-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-white);
    transition: all var(--transition-fast);
}

.footer-newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.footer-newsletter-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 3px rgba(255, 221, 0, 0.1);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-gray);
}

.footer-bottom p {
    margin: 0;
    font-size: var(--font-size-sm);
}

.footer-bottom a {
    color: var(--color-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    color: var(--color-primary);
}

.donator-info {
    flex: 1;
}

.donator-name {
    font-weight: 700;
    font-size: var(--font-size-base);
    color: var(--color-black);
    margin-bottom: 2px;
}

.donator-stats {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
}

.donator-amount {
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-black);
}

/* ============================================================================
   RECENT SUPPORTERS
   ============================================================================ */

.supporters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.supporter-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-primary);
}

.supporter-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.supporter-avatar-sm {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-white);
    flex-shrink: 0;
}

.supporter-name {
    font-weight: 600;
    color: var(--color-black);
}

.supporter-amount {
    font-weight: 700;
    color: var(--color-primary-dark);
}

.supporter-message {
    font-size: var(--font-size-sm);
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-xs);
    line-height: 1.5;
}

.supporter-time {
    font-size: var(--font-size-xs);
    color: var(--color-gray);
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

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

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

.animate-slide-in {
    animation: slideIn 0.5s ease-out;
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

    h1 {
        font-size: var(--font-size-4xl);
    }

    h2 {
        font-size: var(--font-size-3xl);
    }

    h3 {
        font-size: var(--font-size-2xl);
    }

    .donation-widget {
        padding: var(--spacing-lg);
    }

    .coffee-amounts {
        grid-template-columns: 1fr;
    }

    .supporters-grid {
        grid-template-columns: 1fr;
    }

    .goal-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
}

/* ============================================================================
   UTILITIES
   ============================================================================ */

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

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

.flex {
    display: flex;
}

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

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

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

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

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.hidden {
    display: none;
}

.visible {
    display: block;
}