/* REKT - Minimal Black & White Design */

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

:root {
    --color-bg: #000000;
    --color-text: #ffffff;
    --color-border: #ffffff;
    --color-gray: #808080;
    --font-mono: 'Courier New', 'Courier', monospace;
}

html { font-size: 16px; }

body {
    font-family: var(--font-mono);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* HEADER */
.header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.logo {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 0.875rem;
    letter-spacing: 0.2em;
    color: var(--color-gray);
}

/* MAIN */
.main-content { flex: 1; }

.screen { display: none; }
.screen.active { display: block; }

.form-box {
    border: 1px solid var(--color-border);
    padding: 2rem;
}

h2 {
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

/* FORM */
.form-group { margin-bottom: 1.5rem; }

label {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    outline: none;
}

input[type="text"]:focus {
    border-color: var(--color-text);
    box-shadow: inset 0 0 0 1px var(--color-text);
}

input[type="text"]::placeholder { color: var(--color-gray); }

.form-help {
    display: block;
    font-size: 0.75rem;
    color: var(--color-gray);
    margin-top: 0.25rem;
}

/* FILE UPLOAD */
.file-upload { position: relative; }

input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-label {
    display: block;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}

.file-label:hover {
    background: var(--color-text);
    color: var(--color-bg);
}

/* PREVIEW */
.preview-container {
    margin: 1.5rem 0;
    border: 1px solid var(--color-border);
    padding: 1rem;
    text-align: center;
}

.preview-container img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.hidden { display: none !important; }

/* BUTTONS */
.btn-submit {
    width: 100%;
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    background: var(--color-text);
    color: var(--color-bg);
    border: 1px solid var(--color-text);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-submit:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* PROCESSING */
.loader {
    width: 40px;
    height: 40px;
    border: 2px solid var(--color-border);
    border-top-color: transparent;
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

#processingTitle {
    text-align: center;
    margin-bottom: 1rem;
}

#processingStatus {
    text-align: center;
    color: var(--color-gray);
    font-size: 0.875rem;
}

/* RESULTS */
.result-info {
    margin: 2rem 0;
    padding: 1rem;
    border: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.result-info p {
    margin-bottom: 0.5rem;
    word-break: break-all;
}

.result-info p:last-child { margin-bottom: 0; }

.error-box {
    color: var(--color-text);
    margin-bottom: 1.5rem;
    padding: 1rem;
    border: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.result-info strong {
    font-weight: 700;
    letter-spacing: 0.05em;
}

/* FOOTER */
.footer {
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-gray);
}

.footer p { margin-bottom: 0.5rem; }

.footer a {
    color: var(--color-text);
    text-decoration: none;
    border-bottom: 1px solid var(--color-text);
}

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

/* RESPONSIVE */
@media (max-width: 640px) {
    .container { padding: 1rem 0.5rem; }
    .logo { font-size: 2rem; }
    .form-box { padding: 1rem; }
    h2 { font-size: 1.25rem; }
}

/* VALIDATION */
input:invalid { border-color: var(--color-border); }
input:valid { border-color: var(--color-text); }