/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #4f46e5;
    --color-primary-light: #4f46e550;
    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-500: #64748b;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-900: #0f172a;
    --color-white: #ffffff;
    --color-black: #000000;
    --color-green-600: #16a34a;
    --color-red-600: #dc2626;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-white);
    color: var(--color-slate-900);
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 2.25rem;
    line-height: 2.5rem;
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 1.875rem;
    line-height: 2.25rem;
}

h3 {
    font-size: 1.125rem;
    line-height: 1.75rem;
}

h4 {
    font-size: 0.875rem;
    line-height: 1.25rem;
}

p {
    font-size: 1rem;
}

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

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

.text-xs {
    font-size: 0.75rem;
    line-height: 1rem;
}

.text-slate-500 {
    color: var(--color-slate-500);
}

.text-slate-600 {
    color: var(--color-slate-600);
}

.text-slate-700 {
    color: var(--color-slate-700);
}

.text-slate-900 {
    color: var(--color-slate-900);
}

.text-indigo-600 {
    color: var(--color-primary);
}

.text-green-600 {
    color: var(--color-green-600);
}

.text-red-600 {
    color: var(--color-red-600);
}

/* Layout Utilities */
main {
    background-color: var(--color-white);
    color: var(--color-slate-900);
}

.max-w-7xl {
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
}

.max-w-3xl {
    max-width: 48rem;
}

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

.max-w-md {
    max-width: 28rem;
}

.max-w-xl {
    max-width: 36rem;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.p-4 {
    padding: 1rem;
}

.p-6 {
    padding: 1.5rem;
}

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

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

.py-6 {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
}

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

.py-12 {
    padding-top: 3rem;
    padding-bottom: 3rem;
}

.py-14 {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
}

.py-16 {
    padding-top: 4rem;
    padding-bottom: 4rem;
}

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

.py-24 {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mt-6 {
    margin-top: 1.5rem;
}

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

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

.mb-6 {
    margin-bottom: 1.5rem;
}

.mb-10 {
    margin-bottom: 2.5rem;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

.gap-6 {
    gap: 1.5rem;
}

.gap-8 {
    gap: 2rem;
}

.gap-10 {
    gap: 2.5rem;
}

/* Flexbox */
.flex {
    display: flex;
}

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

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

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

/* Grid */
.grid {
    display: grid;
}

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

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

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

/* Responsive Design */
@media (max-width: 640px) {
    h1 {
        font-size: 1.875rem;
        line-height: 2.25rem;
    }

    h2 {
        font-size: 1.5rem;
        line-height: 2rem;
    }

    h3 {
        font-size: 1rem;
        line-height: 1.5rem;
    }

    .px-6 {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .py-14 {
        padding-top: 2rem;
        padding-bottom: 2rem;
    }

    .py-20 {
        padding-top: 2.5rem;
        padding-bottom: 2.5rem;
    }

    .py-24 {
        padding-top: 2.5rem;
        padding-bottom: 2.5rem;
    }

    .md\:text-5xl {
        font-size: 1.875rem;
    }

    .md\:grid-cols-2 {
        grid-template-columns: 1fr;
    }

    .md\:grid-cols-3 {
        grid-template-columns: 1fr;
    }

    .sm\:grid-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .gap-8 {
        gap: 1rem;
    }

    .gap-10 {
        gap: 1.5rem;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    h1 {
        font-size: 2rem;
        line-height: 2.5rem;
    }

    .py-14 {
        padding-top: 2.5rem;
        padding-bottom: 2.5rem;
    }

    .py-20 {
        padding-top: 3rem;
        padding-bottom: 3rem;
    }

    .py-24 {
        padding-top: 4rem;
        padding-bottom: 4rem;
    }

    .md\:text-5xl {
        font-size: 2.25rem;
        line-height: 2.5rem;
    }

    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .md\:grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .sm\:grid-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) {
    h1 {
        font-size: 2.25rem;
        line-height: 2.5rem;
    }

    .md\:text-5xl {
        font-size: 3rem;
        line-height: 3.5rem;
    }

    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .sm\:grid-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Borders and Shadows */
.border {
    border: 1px solid var(--color-slate-200);
}

.border-y {
    border-top: 1px solid var(--color-slate-200);
    border-bottom: 1px solid var(--color-slate-200);
}

.border-t {
    border-top: 1px solid var(--color-slate-200);
}

.border-gray-300 {
    border-color: #d1d5db;
}

.rounded {
    border-radius: 0.375rem;
}

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

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

.overflow-hidden {
    overflow: hidden;
}

.shadow-lg {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Background Colors */
.bg-white {
    background-color: var(--color-white);
}

.bg-slate-50 {
    background-color: var(--color-slate-50);
}

.bg-black {
    background-color: var(--color-black);
}

.bg-indigo-50 {
    background-color: var(--color-primary-light);
}

/* Form Elements */
input[type="email"],
textarea,
button {
    font-family: inherit;
    font-size: 1rem;
}

input[type="email"],
textarea {
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    padding: 0.75rem 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-size: 1rem;
}

input[type="email"]::placeholder,
textarea::placeholder {
    color: #9ca3af;
}

input[type="email"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

button {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #1f2937;
}

button:active {
    background-color: #111827;
}

.space-y-4 > * + * {
    margin-top: 1rem;
}

/* Portfolio Grid */
.group {
    transition: all 0.3s ease;
    border-radius: 0.75rem;
}

.group:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.group img {
    transition: transform 0.3s ease;
    width: 100%;
    height: auto;
    display: block;
}

.group:hover img {
    transform: scale(1.05);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Status Messages */
.hidden {
    display: none;
}

.status-success {
    color: var(--color-green-600);
}

.status-error {
    color: var(--color-red-600);
}

/* Header */
header {
    border-bottom: 1px solid transparent;
}

/* Footer */
footer {
    background-color: var(--color-white);
}

/* Typography Utilities */
.font-semibold {
    font-weight: 600;
}

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

.tracking-tight {
    letter-spacing: -0.01em;
}

.leading-relaxed {
    line-height: 1.625;
}

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

.w-full {
    width: 100%;
}

.w-9 {
    width: 2.25rem;
}

.h-9 {
    height: 2.25rem;
}

.h-auto {
    height: auto;
}

/* Transition Utilities */
.transition {
    transition: all 0.3s ease;
}

.hover\:shadow-lg:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.hover\:bg-slate-800:hover {
    background-color: #1e293b;
}

/* Portfolio Grid Specific */
#portfolio-grid {
    gap: 1.5rem;
}

@media (min-width: 641px) {
    #portfolio-grid {
        gap: 2rem;
    }
}

@media (min-width: 1025px) {
    #portfolio-grid {
        gap: 2.5rem;
    }
}